Medicines

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Below are listed some of the common drugs used in feline medicine. See the FDA Green book for a comprehensive list of approved veterinary medicines.

Drug (cats)

Indications Dose Route Frequency
Acarbose Diabetes mellitus 12.5 - 20 mg Oral with each meal
Acemannan (Aloe vera derivative) Immunomodulation 1-2 mg/kg Intralesional, IP or SQ weekly
Acepromazine (ACP) Sedation, restraint 0.05-2.25 mg/kg SQ, IM, PO q 8-12hrs
Aortic thromboembolism 0.15-0.3 mg/kg SQ q 8-12hrs
Amphetamine toxicosis 0.05 -1.0 mg/kg IV, IM, SQ q 8-12hrs
Acetazolamide Glaucoma 5-10 mg/kg PO q 8-12hrs
Acetylcysteine Mucolytic and acetaminophen toxicity 140 mg/kg IV loading dose
70 mg/kg PO 4-6 x 5-7 treatments
Acetylsalicylic acid Antipyretic 6-10 mg/kg PO q 48 - 72hrs
Antithrombotic 80 mg/cat or 25 mg/kg PO 2 times/wk
Anti-inflammatory 10-20 mg/kg PO q 48 hrs
Analgesia 10 mg/kg PO q 48hrs
Actinomycin-D Anticancer / antimicrobial 0.5-0.9 mg/m2 IV once every 3 weeks
Acyclovir Anti-herpes viral 200 mg PO q 6hrs
S-Adenosylmethionine (SAME) Replenishes glutathione stores in chronic liver disease 20-30 mg/kg PO q 24hrs
Alizin Antiprogestin, induction of parturition, abortifacient (for mesalliance) 10mg/kg SQ Days 1, 2, 7 & 14
Albendazole Lungworm 50 mg/kg PO daily for 21 days
Albuterol (Salbutamol) Bronchodilation PO q 6 - 8hrs
Allopurinol Urate urolithiasis 10 mg/kg PO q 8 - 12hrs for 30 days
Alprazolam (Benzodiazepine) Elimination behavioural problems 0.125-0.25 mg/cat PO q 12hrs
Aluminium carbonate gel Phosphate binder 10-30 mg/kg PO with meals q 8hrs
Aluminium hydroxide Antacid 20-30 ml PO q 2 - 4hrs
Phosphate binder 30-90 mg/kg PO with meals q 8 - 24hrs
Amantadine Analgesia for chronic pain 3-5 mg/kg PO daily for 7-14 days
Amikacin Susceptible infections 15-22 mg/kg IM, IV, SQ q 24hrs
Aminopentamide (Centrine) Antidiarrheal 0.1 mg/cat SC, IM, PO q 8 - 12hrs
Aminophylline Bronchodilator 4-6.6 mg/kg PO q 8 - 12hrs; use with caution in cats
2-5 mg/kg IV infusion q 12hrs
Aminopromazine Smooth muscle relaxant 2.0-4.5 mg/kg PO q 12hrs
6-aminosalicylic acid Irritable bowel syndrome see mesalamine, olsalazine
Amitriptyline (Endep-10) Behaviour, urine spraying 2 mg/kg or 5-10 mg/cat PO q 24hrs
Amlodipine besylate (Norvasc) Systemic hypertension 0.625 mg/cat PO q 24hrs
Ammonium chloride Struvite dissolution 800 mg/cat PO q 24hrs
Amoxicillin/clavulanic acid Susceptible infections 10-20 mg/kg PO q 12hrs
Amoxil (Amoxicillin) Susceptible infections 4-11 mg/kg PO q 12hrs
Amphetamine sulphate CNS stimulation during certain toxicoses 5 mg/cat PO q 12hrs
Amphotericin B Systemic mycoses 0.15-1 mg/kg in 5% dextrose IV q 48hrs to a total cumulative dose of 10mg/kg
SQ diluted 1:10 in saline
Ampicillin Susceptible infections 20-60 mg/kg PO q 8 - 12hrs
Amprolium Coccidiosis 60-100 mg/kg PO q 24hrs x 5 d
With sulfadimethoxine 150 mg/kg PO q 24hrs x 5d
Aprotonin Protease inhibitor (Pancreatitis), fibrinolytic agent 5000 KUI (kallikrein inhibitor units)/kg IP q 6 - 8hrs
Ascorbic acid (Vitamin C) Feline infectious peritonitis 25-125 mg/kg/day PO q 24hrs
Acetaminophen toxicosis 30 mg/kg PO, SQ 6x7 treatments
Asparaginase Lymphosarcoma 10,000 U/m2 IV weekly as part of a protocol
Aspirin Antipyretic 6-10 mg/kg PO q 48 - 72hrs
Atenolol (Tenormin) ß1-blocker for Hypertrophic cardiomyopathy + Hypertension 6.25 mg/cat PO q 24hrs
Atipamezole (Antisedan) Medetomidine reversal equivolume IM as needed
Atovaquone Antiprotozoal (pneumocystosis) 13.3 mg/kg with fatty meal PO q 8hrs x 21 days
Atracurium besylate Paralytic anaesthetic agent 0.1-0.25 mg/kg IV repeated q 30mins
Atropine Sinus bradycardia 0.02-0.04 mg/kg IM, IV, SQ as required
Organophosphate toxicity 0.2-2.0 mg/kg IM, SQ q 2hrs
Aurothioglucose Pemphigus, Gingivitis and podomatitis 2 mg IM stat, then 1 mg/kg weekly
Azathioprine Enteritis 0.2-0.3 mg/kg PO q 24-48hrs
Immune-mediated haemolytic anaemia 1 mg/kg PO q 24-48hrs
Immunosuppression 1.1 mg/kg PO q 48hrs
Azithromycin (Zithromax)] Susceptible infections 5 mg/kg PO q 24 - 48hrs
Susceptible infections 80 mg stat PO weekly x 3
Aztreonam Susceptible infections 12-25 mg/kg IV, IM q 8-12hrs
Baquiloprim coccidiosis 30 mg/kg PO q 48hrs x 2
Baytril Susceptible infections 5.0-20.0 mg/kg PO, SQ, IM, IV (with caution - may cause blindness) q 24hrsfor 7-10 days
Beclomethasone dipropionate Anti-inflammatory 200 mg Inhalant as required
Benazepril in cats (Fortekor) Afterload reduction (Renal, CHF) 0.25-0.5 mg/kg PO q 24hrs
Benzimidazole Trypanosomiasis 5 mg/kg PO q 24hrs for 4 months
Benzocaine Local anaesthetic 1-5 ml SQ as required
Benzoyl peroxide Seborrheic, antibacterial leave on skin for 10mins q 3 - 4days for 2 weeks
Betamethasone Anti-inflammatory 0.1-0.2 mg/kg PO q 12 - 24hrs
Bethanechol Bladder atony, dysautonia, FLUTD 1.25-5.0 mg PO q 8- 12hrs
Bisacodyl Stool softener 2-5 mg/cat PO q 24hrs as needed
Bismuth subcarbonate GI tract protectant 0.3-3.0 gm PO q 4hrs
Antidiarrheal, antiemetic 1-3 ml/kg PO q 4 - 6hrs
Bleomycin Chemotherapy 10 µg/m2 IV, SQ q 24hrs for 4 days, then weekly; max dose 200mg/m2
Bran Stool softener 1-2 teaspoons/400g food PO as needed
Brewer's yeast B vitamin source 0.2 µg PO q 24hrs
Bromide, Potassium Anticonvulsant 30-60 mg/kg PO q 12hrs
Bromocriptine mesylate Cushing's syndrome, false pregnancy, lactation cessation 10-30 µg/kg PO q 24hrs for 10 -16 days
Bunamidine Parasites - Taenia spp, Dipylidium spp 20-50 mg/kg PO after 3hr fast
Bupivicaine hydrochloride Local Anaesthetic 0.22-3.0 ml/cat Epidural stat
Buprenorphine Opioid analgesic 0.005-0.01 mg/kg IV, IM q 4-8hrs
Buspirone (Clomicalm) Behavioural therapy 2.5-5.0mh/cat PO q12-24hrs
Busulfan Chronic myelocytic leukaemia 3-4mg/m2 or 0.1 mg/kg PO q 24hrs
Butamisole Intestinal parasites - Hookworm, whipworm 2.2mg/kg SQ q 21days
Butorphanol Preanaesthetic 0.05-0.4mg/kg with ACP IV, IM, SQ
Antiemetic 0.2-0.6mg/kg SQ, IM, IV
Analgesia 0.1-0.8 mg/kg PO q 6 - 12hrs
Calcitriol Hypoparathyroidism, Hyperparathyroidism (primary), Renal secondary hyperparathyroidism 1.5 - 3.0 ng/kg PO q 24hrs
Calcium carbonate Nutritional supplement 1/2 tsp PO daily
Phosphate binder 60-100 mg/kg PO daily
Calcium chloride 10% Ventricular asystole 1 ml/9kg or 0.1-0.3ml/kg IV (slowly) stat
Hypocalcaemia 1 ml/9kg IV stat
Calcium citrate Calcium replacement, Feline lower urinary tract disease (FLUTD) 10-30 mg/kg PO q 8hrs
Calcium EDTA Lead poisoning 100 mg/kg/day SQ daily for 5 days
Calcium gluconate Ventricular asystole 0.5-1.5 ml/kg IV (slowly) as required
Hypocalcaemia, hyperkalemia 0.5-1.5 ml/kg IV (slowly) as required
Captan powder 50% Fungal infections 2 tablespoons/gal water topically, do not rinse 2-3 x week
Captopril Vasodilator 2-3 mg/cat PO q 8-12hrs
3-6.25 mg/cat PO q 12hrs
Carbenicillin Susceptible infections 15-30 mg/kg IV q 8hrs
Carbenicillin indanyl sodium Urinary tract infections 10-55 mg/kg PO q 8hrs
Carbimazole Hyperthyroidism 5 mg/cat PO q 8 - 12hrs
Carboplatin Chemotherapy 200 mg/m2 IV q 4weeks
Carmustine Chemotherapy 50 mg/m2 IV q 6weeks
Carprofen (Rimadyl) Analgesic 1-4 mg/kg SQ stat
0.5-1.0 mg/kg PO q 24hrs
Cefadroxil (Cefa-drops - cephalosporin) Susceptible infections 50 mg/cat PO q 24hrs for 1-4 weeks
Cephalexin (Rilexin) Susceptible infections 10-35 mg/kg PO q 8 - 12hrs

Cerenia

Anti-emetic 1.0 mg/kg SQ/PO q 24 hrs for 4 days, then rest 2 days
Cetacaine Topical anaesthetic Use cautiously Topical May cause methaemaglobinaemia
Charcoal, activated Adsorbent for poisonings 1-8g/kg PO as needed
Chlorambucil Chemotherapy 0.1-0.5mg/kg PO q 48-72hrs
Immune mediated skin diseases (Pemphigus, EGC) 0.1-0.2mg/kg PO q 48hrs with prednisolone
Chloramphenicol Susceptible infections 50mg/cat PO q 12hrs
Chlordiazepoxide-clidinium (Benzodiazepine) Irritable bowel syndrome 1-2 tabs PO q 12hrs
Chlorhexidine 0.5% Burns dilute 1:40 with saline topically q 24hrs
Chlorothiazide Diuretic 10-40 mg/kg PO q12hrs
Partial ADH deficiency 20-40 mg/kg PO q12hrs
Chlorpheniramine Antihistamine 1-2 mg/cat PO q 8-12hrs
Excessive grooming 2-4 mg/cat PO q 12-24hrs
Antiemetic 0.5 mg/kg IM q 6-8hrs
Chlortetracycline hydrochloride Susceptible infections 25 mg/kg PO q 6-8hrs
Cholecalciferol (Vit D) Hyperparathyroidism (primary) Hypocalcaemia 500-2000 U/kg PO q 24hrs
Cimetidine Oesophagitis, gastric ulceration, antiemetic, chronic gastritis 5-15 mg/kg PO, IV, IM q 8 -12hrs
Immunomodulator 10-25 mg/kg IV, IM, PO q 12hrs
Ciprofloxacin not bioavailable in cats
Cisapride (Prepulsid) constipation, megacolon 0.5-5.0mg/cat PO q 12hrs
Clarithromycin Mycobacterium spp 50 mg/cat PO q 12hrs
Clavulox (Amoxicillin / Clavulanic acid) Susceptible infections 10-20 mg/kg PO q 12hrs
Clindamycin Anaerobic infections 5-11 mg/kg PO q 12hrs
Stomatitis, Pancreatitis 22 mg/kg PO q 24hrs
Exocrine pancreatic insufficiency 5-10 mg/kg PO q 6 - 8hrs
Enteroepithelial cycle 12.5-50 mg/kg PO q 12hrs
Clofazimine Mycobacterium spp 4-8 mg/kg PO q 24hrs for 6 weeks
50 ng/cat PO q 48hrs
Clomipramine Behaviour modification 1-5 mg/cat PO q 12 - 24hrs
Clonazepam (Benzodiazepine) Anticonvulsant, behaviour therapy 0.5 mg/kg PO q 8-12hrs
Clorazepate (Benzodiazepine) Anxiolytic drug 1-2 mg/kg PO q 8 - 12hrs
Clotrimazole Fungal infections apply to lesion topical q 12hrs
Fungal infections 60 ml of 1 g/dl of polyethylene glycol intranasal over 1 hr under general anaesthesia
Cloxacillin Susceptible infections 20-40 mg/kg PO, IM, IV q 4 - 8hrs
Coal tar shampoos Seborrhoea Keep in contact with skin for 10 mins Topically q 24hrs
Cobalamin see Vit B12
Cod liver oil 1 teaspoon / 10 kg
Codeine Pain relief 0.5-4 mg/kg PO q 6 - 12hrs
Antitussive, analgesia 0.1-0.3 mg/kg PO q 4 - 6hrs
Colchicine Antifibrotic 0.01-0.3 mg/kg PO q 4 - 6hrs
Colony stimulating factor Neutropenia 2.5-5.0 mg/kg SQ q 24hrs
Corticotrophin gel (ACTH) Response test pre-ACTH sample 0.5-2.2 IU/kg IM
Cortisone acetate Hypoadrenocorticism ( Addison's disease) 1 mg/kg PO, IM q 24hrs
Cosequin® Osteoarthritis 1 capsule PO q 24hrs
Cosyntropin pre-ACTH sample 0.125 mg/cat IV
1-2 mg/kg PO (with caution) q 12hrs x 2
Cromolyn sodium 4% (Cromone) Allergic conjunctivitis Topically q 4 - 6hrs
Cyanocobalamin Vit B12 deficiency 50-1000 µg PO, IM, SQ q 24hrs
Cyclizine Antiemetic 4 mg/kg IM q 8hrs
Cyclophosphamide Chemotherapy 100 mg/m2 IV
Mammary tumours 100 mg/m2 PO q 3 weeks with doxorubicin
Immune-mediated haemolytic anaemia 2 mg/kg (50mg/m2) PO q 24hrs for 4 days per week
Lymphosarcoma, myeloproliferative disorders 50 mg/m2 PO q 48hrs
Autoimmune skin diseases 50 mg/m2 PO q 24hrs 4 days/wk or q 48hrs
Multiple myeloma 7 mg/kg PO once
FIP 2-4 mg/kg PO q 24hrs 4 days a week
Iritable bowel disease 6.6 mg/kg PO q 3days then q 24hrs
2.2 mg/kg PO q 24hrs
Immunosuppressive therapy 2.2 mg/kg (6.25-12.5 mg/cat) PO q 48hrs or q 24hrs for 4 days a week
Cyclosporin Thrombocytopenia, SLE, sebaceous adenitis 4-6 mg/kg 4hr IV infusion q 24hrs (avoid extravasation)
3-7 mg/kg PO q 12hrs
10 mg/kg PO q 12hrs
Cyclosporine ophthalmic Dry eye, Eosinophilic keratitis 1-2% solution drop in eye q 12hrs
Cyclothiazide Diuretic 0.5-1.0 mg/kg PO q 24hrs
Cyproheptadine Appetite stimulant, aortic thromboembolism 1-4 mg/cat PO q 12 - 24hrs
Cytarabine Chemotherapy 30-50 mg/kg IV, IM, SQ once a week
100 mg/m2 IV. IM, SQ q 24hrs for 4 days then
20 mg/m2 Intrathecal q 24hrs for 1 - 5 days
Cythioate Tick prevention 1.5-3.3 mg/kg PO (tab) q 72hrs or 2 x week
0.22 ml/kg PO (liquid) q 72hrs or 2 x week
Dacarbazine Lymphoreticular neoplasms 200-250 mg/m2 IV q 24hrs for 5 days, every 21 days
Soft tissue sarcomas 1000 mg/m2 IV infusion over 6 - 8hrs, every 21 days
Dactinomycin (Actinomycin-D) Chemotherapy 0.015 mg/kg IV q 24hrs for 3 - 5 days, wait 3 weeks then
0.7-1.5 mg/m2 IV weekly
Dalteparin (low MW heparin) DIC, Thrombosis 70 IU/kg SQ q 24hrs
Danazolol Immune-mediated disorders 5-10 mg/kg PO q 12hrs
Dapsone Mycobacterial infections 1.1 mg/kg PO q 12hrs for 4-6 weeks
Brown recluse spider bite 0.7-1.0 mg/kg PO q 8hrs
Decatibine (Dacogen) Chemotherapy. Feline leukemia, methylation inhibitor 400-800 mg/m2 IV, SQ q 24hrs x 10
Deferoxamine mesylate Iron chelator 10 mg/kg IV, IM, SQ q 2hrs for 2 doses then q 8hrs for 24 hrs
Repertusion (ischaemia) injuries 50 mg/kg IV over 5 mins
Demeclocycline Inappropriate ADH secretion 3-12 mg/kg PO q 6 - 12 hrs
Deprenyl (Fitergol) Hyperadrenocorticism, Cognitive disorders see Selegiline
Derm caps Skin disorders 1 capsule per 9kg PO q 24hrs
Desmopressin acetate Central diabetes insipidus 0.3 µg/kg IM q 12 - 24hrs
Desoxycorticosterone acetate Hypoadrenocorticism 0.2-0.4 mg/kg conjunctivally q 24hrs, max 5mg
Desoxycorticosterone pivalate Addison's disease 25 mg IM stat
Dexamethasone Central oedema, spinal cord trauma, DJD, other CNS trauma 2 mg/kg IV then,
1 mg/kg IV, SQ q 8-12hrs, then
0.1 mg/kg IV, SQ, PO q 8-12hrs
Hydrocephalus 0.25 mg/kg IV, IM, PO q 6 - 8hrs
Shock, anaphylaxis 4 - 6 mg/kg IV (slowly)
Immune-mediated disease 0.25-1.25 mg/kg PO q 12 - 24hrs
0.1-0.15 mg/kg SQ, PO q 12hrs for 5 - 7 days, then taper dose
Addison's disease 0.1-0.5 mg/kg SQ, IV with mineralocorticoids
Asthma 1 mg/kg IV then
0.25-1.0 mg/cat PO q 8 - 24hrs
Dexrazoxane Iron chelation for doxorubicin-induced cardiotoxicity 25 mg/kg (ratio of 10-20:1 dexrazoxane : doxorubicin) IV 15 mins before doxorubicin
Dextran 40 Shock 10-20 ml/kg IV q 24hrs
Dextran 70 Volume expander 10-20 ml/kg IV q 24hrs to effect
Dextroamfetamine Narcolepsy 5-10 mg PO q 8hrs with imipramine
Hyperkinesis 0.2-1.3 mg/kg PO as needed
Dextromethorphan Coughing 0.5-2.0 mg/kg PO, SQ, IV q 6 - 8 hrs
Dextrose, 50% Hypoglycaemia, insulin overdose 2 ml/kg PO
0.25-1.00 ml/kg IV
Dextrose, 5% Hypoglycaemia, insulin overdose 40-50 ml/kg IV, SQ, IP as needed
Diazepam (Valium) Sedation 0.5-2.2 mg/kg PO as needed
Seizures 0.15-0.70 mg/kg or 2-5mg/cat PO, IV q 8hrs
Status epilepticus, certain toxicoses 0.5-1.0 mg/kg IV in increments of 5 - 20mg
Strychnine-induced seizures 2-5 mg/kg IV as needed
0.5 mg/kg IV
Reflex dyssynergia (urethral obstruction) 2.5-5.0 mg/cat PO q 6 - 8hrs
0.5 mg/kg IV
Urinary disorder in cat 1.25-2.5 mg/cat PO q 8 - 12hrs
Appetite stimulant 0.05-0.4 mg/kg IV, PO, IM q 24 - 48hrs
1 mg/cat PO q 24hrs
Overgrooming 1-2 mg PO q 12hrs
1 mg/kg PO q 8 - 12hrs
Dichlorphenamide Glaucoma 3-5 mg/kg PO q 8- 12hrs
Dichlorvos Parasites - Hookworm, whipworm, roundworm 11-22 mg/kg PO repeat in 3 weeks
Dicloxacillin Susceptible infections 10-50 mg/kg PO q 6 - 8hrs
Dicoumarol Anticoagulant 5 mg/kg PO load, then
1.3-2.6 mg/kg PO oid (monitor response)
Dicyclomine Detrusor hyperspasticity or urge incontinence 10 mg/cat PO q 6 - 8hrs
Diethylcarbamazine Heartowrm prophylaxis 6.6 mg/kg PO q 24hrs
Diethylstilboestrol Feline symmetrical alopecia 0.05-0.1 mg/cat PO q 24hrs
Difloxacin (Fluoroquinolone) Susceptible infections 5-10 mg/kg PO q 24hrs
Digoxin Congestive heart failure 0.005-0.008 mg/kg/day PO divided in 12hr doses
Dihydrostreptomycin Susceptible infections 10-30 mg/kg IM, SQ q 12 - 24hrs
Dihydrotachysterol Milk fever 0.03-0.06 mg/kg PO q 24hrs for 3, then
0.01-0.02 mg/kg PO q 24hrs
Diltiazem Hypertension, Hypertrophic cardiomyopathy, Supraventricular tachycardia 0.125-0.35 mg/kg IV
0.5-2.5 mg/kg PO q8hrs
Dimenhydrinate Antihistamine 12.5 mg/cat PO, IM, IV
Dimercaprol (BAL) Arsenic toxicosis 2.5-5.0 mg/kg IM q 4hrs for 2 days, then q 8hrs for 3 days, then q 12hrs for 10 days
Dimethylsulfoxide (DMSO) Spinal cord trauma, Amyloidosis 0.5-1 g/kg IV (10%) q 6 - 8hrs over 45 min
Diminazine aceturate Feline babesiosis, Trypanosomiasis 2.0-3.5 mg/kg IM Once
3.5 mg/kg IM, SQ q 24hrs for 2 days
Dinoprost see prostaglandin F2a
Diphenhydramine (Benadryl) Antihistamine 2-4 mg/kg PO q 6 - 8hrs
Mast cell tumour, antiemetic 2 mg/kg IM, IV q 12hrs as needed
Anaphylaxis, urticaria, angioneurotic oedema 2 mg/kg IM, IV q 12hrs as needed
Diphenoxylate HCl Acute colitis 0.05-0.1 mg/kg PO q 12hrs
0.6-1.2 mg/cat PO q 8 - 12hrs
Diphenylthiocarbazone Thallium toxicosis 50-70 mg/kg PO q 8hrs
Diphemanil methylsulphate Anticholinergic (bronchodilator) 1.8 mg/kg IM q 12hrs
Dipyridamole Antithrombotic 4-10 mg/kg PO q 24hrs
25 mg/kg q 8hrs (low dose);12 - 24hrs (high dose)
Disodium EDTA Calcium keratopathy 0.37% solution topically lavage cornea for 15 - 20 mins
1% solution; 1-2 drops topically q 12 hrs for several weeks
Dithiazanine iodide Microfilaricide 6.6-11 mg/kg PO q 24 hrs for 7 - 10 days
DL methionine see methionine
Dobutamine Positive ionotrope 0.5-2.0 µg/kg/min IV infusion (caution) 1 min
Docusate sodium or calcium Stool softener 50 mg/cat PO q 12 - 24hrs
disposable enema 250 mg/12ml glycerin Rectal q 24hrs as needed
Dolasetron Antiemetic 0.6 mg/kg PO, IV, SQ q 24hrs
Dopamine HCl Inotropic agent 2-25 µg/kg (up to 50 µg/kg if severe hypotension or shock) IV infusion 1 min
Renal vasodilator, acute renal failure 2-5 µg/kg (low dose) IV infusion in 5% dextrose/saline 1 min
Doxapram Respiratory stimulant in neonates 1-5 mg/kg IV (umbilical vein) as needed
1-2 drops PO as needed
Doxorubicin Adriamycin) Chemotherapy 10-30 mg/m2 IV q 21 days
Doxycycline HCl (Vibravet) Susceptible infections 5-10 mg/kg PO, IV q 12 - 24hrs
Doxylamine succinate Antihistamine 1.1-2.2 mg/kg PO, SQ, IM q 8 - 12hrs
Edrophonium Myasthenia gravis diagnosis 2.5 mg/cat IV stat
Emetine Vomiting 3.3 ml/kg, dilute 50:50 with water PO stat
Enalapril (ACE inhibitor) Hypertension, Congestive heart failure, Valvular endocardiosis 0.25-0.5 mg/kg PO q 12 - 24hrs
Endotoxin antisera Endotoxemia 408 mg/kg IV stat
Enflurane Gaseous anaesthesia

Induction: 2-3%

Maintenance: 1.5-3.0%

intratracheal as needed
Enilconazole 10% Nasal aspergillosis 5% solution (1:1 in water) topically q 12hrs for 7 - 10 days
10-20 mg/kg (10% solution: 50:50 in water instil into nasal sinus q 12hrs for 10 - 14 days
Dermatophytes dilute to 0.2% solution wash q 72 - 96hrs for 4 treatments
Enrofloxacin Susceptible infections 5.0-20.0 mg/kg PO, SQ, IM, IV (with caution - may cause blindness) q 24hrs for 7 - 10 days
Ephedrine Bronchodilator, urinary incontinence 2.0-5.0 mg/kg PO q 8 - 12hrs
Epinephrine: Use 1:10,000 stock, dilute 1:1000 in 10ml saline Cardiac arrest 0.2 ml/kg IV, intratracheal q 5 - 15 min as needed
Anaphylaxis, Feline asthma 0.1 ml/kg SQ, IM, IV q 5 - 15 min as needed
Epsiprantel Parasites - Dipylidium spp, Taenia spp 2.5-2.75 mg/kg PO stat
Ergocalciferol Vitamin D 500-2000 IU/kg PO q 24hrs
Erythromycin Susceptible infections 10-22 mg/kg PO, IV q 8hrs
Erythropoietin (Eprex 1000) Anaemia from Kidney disease 50-100 IU/kg SQ 3 x weekly for 12 weeks then twice weekly (as need to maintain PCV at 35%)
400 IU/kg IV, SQ once a week
Esmolol Selective B1 blockade 0.05 mg/kg slow IV loading dose, then
50-200 µg/kg IV infusion per min
Estradiol cypionate mesalliance 125-250 µg/cat IM between 40hrs and 5 days post-coitus
Ethacrynic acid Diuretic, pulmonary oedema 0.2-0.4 mg/kg IV, IM q 4 - 12hrs
Ethanol (20%) ethylene glycol toxicosis 5 ml/kg IV q 6hrs for 30hrs, then q 8hrs for 32 hrs
Ethosuximide Epilepsy 40 mg/kg PO load, then
20 mg/kg PO
Etidronate disodium Hypercalcemia 10 mg/kg PO q 2hrs
Etomidate Anaesthetic induction 0.5-3.0 mg/kg IV as needed
With opioids 0.5-1.0 mg/kg IV as needed
Etretinate Dermatopathy 1-2 mg/kg PO q 24hrs
Euthanasia solution Pentobarbitone sodium 120 mg/kg for first 4.5kg; 60mg/kg thereafter IV stat
with phenytoin 1 ml / 4.5 kg IV stat
Famotidine Gastric antisecretory (H2 receptor antagonist) 0.5 mg/kg IM, SQ, PO q 12 - 24hrs
Famciclovir Antiviral 62.5 mg/kg PO q 12 - 24hrs
Fatty acids (essential) Atopy, fatty acid deficiency Derm caps - 1 cap/cat PO q 24hrs
Febantel Antiparasiticide 10 mg/kg per 1mg/kg praziquantel PO q 24hrs for 3 days
Fenbendazole Capillaria plica, Coccidiosis 25-50 mg/kg PO q 12hrs for 3-14 days
Mesocestoides spp 50-100 mg/kg PO q 12 - 24hrs for 28 days, repeat in 1 week
Fentanyl citrate (Patches) Analgesia 0.01 mg/kg IV, SQ, IM
transdermal q 72 - 96hrs
Ferric cyanoferrate Thallium toxicosis 4-8 mg/kg PO q 8hrs
Ferrous sulphate Anaemia 50-100 mg/cat PO q 24hrs
Fitergol ( Deprenyl) Cushing's syndrome, Cognitive disorders see Selegiline
Flavoxate Urinary urge incontinence (Detrusor hyperspasticity) 100-200 mg/cat PO q 6 - 8hrs
Florfenicol (Chloramphenicol analogue) Susceptible infections 22-50 mg/kg PO, IM, SC q 12hrs
Fluconazole Fungistatic / fungicidal (dose related) 2.5-10.0 mg/kg PO with food q 12 - 24hrs
Cryptococcus 50-100 mg/cat PO with food q 12 - 24hrs
Flucytosine Cryptococcus 30-50 mg/kg PO q 6 - 8hrs
Urinary candidiasis 67 mg/kg PO q 8hrs
Fludrocortisone acetate (Aldosterone analogue) Addison's disease 0.1-0.2 mg/cat PO q 24hrs
Flumazenil Hepatic encephalopathy 0.2 mg/cat IV as needed
Flumethasone Anti-inflammatory 0.15-0.3 mg/kg IV, IM, SQ q 24hrs
Flunixin meglamine Anti-inflammatory 0.5-2.2 mg/kg IV, IM, SQ stat
Fluoxetine (Prozac) Behavioural problems (SSRI) 0.5-4 mg/cat PO q 24hrs
Flurazepam (Benzodiazepine analogue) Appetite stimulant 0.2-0.4 mg/kg PO q 4 - 7 days
Flurbiprofen (an NSAID - 0.03% solution) Allergic conjunctivitis 0.2-0.4 mg/kg Topically q 8 - 12hrs
Folic acid Dietary supplement 2.5 mg/cat PO q 24hrs
Folinic acid 'Rescue' for sulfonamides 1 mg/kg PO q 24hrs
Follicle stimulating hormone (FSH) Induction of oestrus 500 IU HCG IV, IM, SQ q 24hrs for 2 days
Fomepizole (4-Methylpyrazole) Antifreeze toxicity 20mg/kg IV stat
15mg/kg IV q12hrs for 2 days, then
5mg/kg IV as required
Foscanart sodium (phosphonoformate) Susceptible viral infections 13.3 mg/kg IV, PO q 8hrs
Furazolidone Giardia spp 4 mg/kg PO q 12hrs for 7-10 days
Amoebic colitis 2.2 mg/kg PO q 8hrs for 7-10 days
Coccidiosis 8-20 mg/kg PO q 24hrs for 5 days
Furosemide Diuresis 2-4 mg/kg IV, IM, PO q 8 - 12hrs as needed
Hypertension 0.5-2.0 mg/kg PO q 12hrs
Hydrocephalus, brain oedema 1-2 mg/kg PO q 12hrs
Gabapentin Epilepsy (add-on) 10 mg/kg PO q 8 - 12hrs
Gamma globulin Immune-mediated disease 1 g/cat IV q 6 - 12hrs
Gentamicin Susceptible infections 6-8 mg/kg IM, SQ, IV q 24hrs
Glimipiride (sulfonylurea) Non-insulin-dependant diabetes mellitus 1-2 mg/cat PO q 24hrs
Glipizide (sulfonylurea) Non-insulin-dependant diabetes mellitus 0.25-0.5 mg/kg PO q 8 - 12hrs
2.75-7.5 mg/cat PO q 8 - 12 hrs (gradual increase in maximum dose as needed based on serum glucose)
Glyburide (sulfonylurea) Non-insulin-dependant diabetes mellitus 0.2 mg/kg PO q 24hrs
0.625 mg/cat PO q 24hrs
Glycerin Acute glaucoma 1-2 ml/kg of 50% solution PO repeated once at 8 hrs
Glyceryl guaiacolate Muscle relaxation during certain toxicoses 110 mg/kg IV as needed
Glyceryl monoacetate Sodium fluoroacetate toxicosis 0.55 mg/kg hourly to 2-4mg/kg IM as needed
Glycopyrrolate Sinus bradycardia, SA block, AV block 0.005-0.010 mg/kg IV, IM as needed
Hypersialism 0.01 mg/kg SQ as needed
Preanaesthetic 0.01-0.02 mg/kg SC, IM stat
Gold sodium thiomalate Immune-mediated disease 1-5 mg/cat IM weekly x 3; 2nd + 3rd week at 2 - 10 mg/cat
Gonadotrophin releasing hormone (GnRH) Cystic ovarian syndrome 50-100 µg/cat IM for 1-3 treatments
25 µg/cat IM after mating, or on days 2 of oestrus
Granulocyte colony stimulating factor Neutropenia 3-10 μg /kg SQ q 12 - 24hrs
Griseofulvin (Grisovin) Antifungal 10-30 mg/kg PO q 24hrs for 4 weeks
Guaifenesin Tranquiliser 44-88 mg/kg (alone) IV stat
33-88 mg/kg (with thiamylal) IV stat
33-88 mg/kg (with ketamine) IV stat
Haloperidol Psychogenic alopecia 2 mg/cat PO q 12hrs
Halothane Gaseous anaesthesia Induction: 3% Inhalant stat
Maintenance: 0.5-1.5% Inhalant as needed
Haemoglobin (polymerised bovine) Blood replacement 10-30 ml/kg IV stat
Heparin Aortic thromboembolism, thrombophlebitis Initial dose: 100-200 IU/kg IV then
Maintenance dose: 50-100 IU/kg SQ q 6 - 8hrs
Aortic thromboembolism Induction 1000 IU/kg IV then
Maintenance: 50 IU/kg SQ q 8hrs
Pancreatitis 50-1000 IU/kg SQ q 8 - 12hrs
DIC 75-100 IU/kg IV, SQ q 6hrs
Lipoprotein lipase provocation test 100 IU/kg IV test lipids before and 15 mins after heparin
Heparin, LMW see Dalteparin
Hetacillin Susceptible infections 10-20 mg/kg PO q 8 - 12hrs not associated with feeding
Hetastarch (Hydroxyethyl starch) Plasma volume expander 10-20 ml/kg IV as needed
Human gammaglobulin Immune-mediated disease 0.5-1.5 g/kg IV q 12hrs (infusion)
Hycodan (Hydrocodone) Antitussive 0.22 mg/kg PO q 12hrs
Hyaluronate sodium Synovitis 3-5 mg/cat intra-articular q 7days
Hydralazine Vasodilator: heart failure 0.5 mg/kg, titrate up to 0.5-0.8 mg/kg (up to 10mg/cat) PO q 12hrs
Hydrochlorothiazide Hypertension 0.5-2.0 mg/kg PO q 12 - 24hrs
Nephrogenic diabetes insipidus 0.5-5.0 mg/kg PO q 12hrs
Hypoglycaemia 2-4 mg/kg PO q 12hrs
Calcium oxalate uroliths 2 mg/kg PO q 12hrs
Hydrocortisone Replacement therapy 0.5-1.0 mg/kg PO q 24hrs
Anti-inflammatory 2.5-5.0 mg/kg PO q 12hrs
Hydrocortisone aurate Hypoadrenocorticism 0.1-0.2 mg/kg IM q 8 - 12hrs
Immune-mediated haemolytic anaemia 2-4 mg/kg IM q 12 - 24hrs
Hydrocortisone sodium succinate Shock 8-150 mg/kg IV stat
Hydrogen peroxide (3%) Emetic 5-10 ml/cat PO stat
Hydroxyurea Primary polycythemiapolycythemia 25-30 mg/kg PO q 3days
Chronic granulocytic leukaemia 0.5 g/m2 PO q 12hrs for 4-6 weeks, then halve dosage
Hydroxyzine Antihistamine 5-10 mg/cat PO q 12hrs
Hypertonic saline Shock 2-6 ml/kg rapid IV infusion stat
Idarubicin HCl Antiviral 2.0 mg/kg PO q 24hrs for 2 days, then repeat q21 days
Idoxuridine Ocular herpes viral infection 0.1% solution: 1 drop topically q 4 - 6hrs
0.5% ointment topically q 1hr
Imidopril Congestive heart failure and Chronic renal disease 150 mg syrup PO 0.5cc q 24hrs
Imipenem-cilastin (Broad-spectrum 'Gorilla-cillin') Susceptible infections 2-10 mg/kg IM or slow IV q 6 - 8hrs
Imipramine Behavioural modification, urinary incontinence 2.5-5.0 mg/cat PO q 12hrs
Insulin, glargine Diabetes mellitus 0.25-5.0 U/kg SQ q 12hrs, adjust as needed
Insulin, lente Diabetes mellitus 0.5 U/kg SQ q 12 - 24hrs
Insulin, NHP Diabetes mellitus 1-3 U/cat SQ q 12 - 24hrs
Insulin, PZI Diabetes mellitus 1-3 U/cat SQ q 12 - 24hrs
Insulin, regular Diabetes mellitus 1-2 U/cat SQ q 6 - 8hrs
Insulin, ultralente Diabetes mellitus 1-3 U/cat SQ q 12 - 24hrs
Ipakitine Chronic renal disease 1 g/cat PO q 12 hrs
Interferon α</font>2, human recombinant</font> Immunostimulant in non-neoplastic feline leukemia 15-30 U/cat IM, SQ, PO q 24hrs on alternate weeks
FeLV appetite stimulant 1 U/cat PO q 24hrs
FIP (dry) 30 U/cat PO q 24hrs on alternate weeks
FIP(wet) 2000 U/cat IM q 24hrs
Conjunctivitis 10 U/cat PO q 24hrs
Interferon-α2b, human recombinant Immunostimulation 15-30 U/cat PO, SQ, IM q 24hrs for 7 days
Interferon-Ω, feline recombinant Immunostimulation 1 million U/kg SQ q 48hrs, reducing to once weekly if responding
Iodine Hyperthyroidism 50-100 mg/cat PO q 24hrs
Iodide sodium, potassium 20% solution Hyperthyroidism, Sporotrichosis spp 20 mg/kg PO q 12 - 24hrs
Iopamidol Myelography 0.25 ml/kg intrathecal stat
Ipecac syrup Emetic 2-6 ml/cat PO stat
Ipodate Hyperthyroidism (short term) 15 mg/kg PO q 12hrs
Iron dextran Anaemia 50 mg/cat IM at 18 days of age
Isoflurane Gaseous anaesthesia

Induction: 5%

Maintenance: 1.5-2.5%

Inhalation stat
Isometheptene Urethral antispasmodic 0.25-0.5 ml/cat IM q 12hrs
0.5 tab/cat PO q 12hrs
Isoniazid Mycobacterium spp infections 10-20 mg/kg PO q 24hrs
Isopropamide (anticholinergic) Sinus bradycardia, SA or AV block 0.2-0.4 mg/kg PO q 8 - 12hrs
Antidiarrhoeal, GIT hypermotility 0.2-1.0 mg/kg PO q 12hrs
Isoproterenol - isoprenaline (ß2- agonist) Bradycardia, AV block, cardiac arrest 0.04-0.08 µg/kg IV infusion as needed
Feline asthma 0.44 mg/kg PO q 6 - 12hrs
0.5ml of 1:200 dilution Inhalant q 4hrs x 3
Isosorbide dinitrate Vasodilator, osmotic diuretic, [megaoesophagus.htm megaoesophagus] 2.5-5.0mg/cat PO q 12hrs
Isotretinoin (Vitamin D analogue) Acne 5 mg/kg PO q 24hrs
Itraconazole Fungal infections or generalised dermatomycosis 5-10 mg/kg PO q 12 - 24hrs
Ivermectin Heartworm disease prophylaxis 24 µg/kg PO once monthly
Microfilaricidal 50 µg/kg PO stat
Endoparasiticidal 200-400 µg/kg IM, SQ, PO weekly
Cheyletiella spp, Notoedres spp 200-400 µg/kg SQ stat
Jenotone (Aminopropazine fumarate) Urinary tract obstruction 2 mg/kg IM, SQ q 12hrs
Kanamycin Susceptible infections 10-15 mg/kg IV, IM, SQ q 12hrs
GI tract bacterial overgrowth 10-12 mg/kg PO q 8 - 12hrs
Kaolin / pectin GI tract protectant 1-2 ml/kg PO q 2 - 6hrs
Ketamine (NMDA-receptor antagonist) Anaesthesia (with xylazine) 7-11 mg/kg (0.2-0.5ml) IV stat
Sedation (with diazepam) 5.5-10.0 mg/kg (0.3-0.5ml) IV stat
Ketoconazole Systemic and cutaneous mycoses, Sporotrichosis spp 5.0-10.0 mg/kg PO q 12 - 24hrs
Fungal infections, CNS mycoses 15-20 mg/kg PO q 12hrs
Ketoprofen (NSAID) Anti-inflammatory 0.5-1.0 mg/kg PO, IM, SQ q 24hrs
L-asparaginase (Chemotherapeutic agent) Lymphosarcoma 10,000 U/m2 IV weekly as part of a protocol
Lactated Ringer's solution Rehydration 40-50 ml/kg IV q 24hrs
Lactilol Stool softener, hepatic encephalopathy 250 ml/cat PO q 12hrs
Lactoferrin FIV stomatitis 40 mg/kg Topical q 24hrs
Lactulose Hepatic encephalopathy 2.5-5.0 ml/cat PO q 8hrs
5-10 ml diluted in water (1:3) Rectal stat
Stool softener 1 ml/cat PO q 8hrs to effect
Lamisil (Terbinafine) Fungal infections 5-10 mg/kg PO q 24hrs for 2-4 weeks
Lenperone Opioid preanesthetic 0.22-0.88 mg/kg IM, IV stat
Leucovorin Methotrexate toxicity 3 mg/m2 IM within 3hrs of poisoning
Pyrimethamine antidote 1 mg/kg PO stat
Levallorphan (1st generation opiate antagonist) Opioid toxicity/overdose 0.02-0.20 mg/kg IV as needed
Levamisole Heartworm disease 10 mg/kg PO q 24hrs for 7 days
Heartworm disease, Filaroides, Lungworm 25 mg/kg PO q 48hrs for 14 days
Hookworms 10 mg/kg PO q 24hrs for 2 days
Immune stimulant 4.4 mg/kg PO stat
Levarterenol (Norepinephrine) Positive ionotrope 0.05-0.3 μg/kg IV q1 min
Levetiracetam ( Nootropic agent) Seizures (add-on) 15-20 mg/kg PO q 8 - 12hrs
Cognitive disorders 15-20 mg/kg PO q 8 - 12hrs
Levodopa (L-DOPA) Hepatic encephalopathy 6.8 mg/kg initially, then 1.4mg/kg PO q 6hrs
Levothyroxine (Synthetic T4) Hypothyroidism 10-30 μg/kg PO q 12hrs
Lidocaine (Xylocaine) Ventricular arrhythmias 0.25-1.0 mg/kg IV then
10-40 μg/kg IV per min
Epidural 4.4 mg/kg epidural stat
Lime sulphur Sarcoptic mange 1:40 dilution Topically weekly for 6 weeks
Lime water Alkaline gastric lavage 5 ml/kg PO stat
Lincomycin Susceptible infections 11-33 mg/kg PO, IV, IM q 12 - 24hrs
Liothyronine (T3) Hypothyroidism 4.4 μg/kg PO q 8 - 12hrs
Lisinopril (ACE inhibitor) Afterload reduction (vasodilator) 0.25-5.0 mg/kg PO q 24hrs
Lobaplatin Chemotherapy 35 mg/m2 IV q 3hrs
Lomustine Chemotherapy 100-150 mg/m2 PO q 6 weeks (subsequent dose based on WBC)
Loperimide Antidiarrhoeal 0.1-0.3 mg/kg PO q 12 -2 4hrs
Lufenuron Immunomodulator 15-30 mg/kg PO q 24hrs with meal for 30 days
Flea control 10 mg/kg SQ
Antifungal [fungal%20diseases.htm (ringworm)] 80 mg/kg PO repeat in 2 weeks
Lufenuron / milbemycin Heartworm disease prevention 1 tablet for appropriate size PO monthly
Luteinizing hormone (LH) Stimulate ovulation 50 IU/cat IM after mating
L-lysine Eosinophilic keratitis / Herpes rhinitis 250-500 mg PO q 12 - 24hrs
Lysine-8-vasopressin Central diabetes insipidus 1-2 sprays conjunctival q 8 - 24hrs
Magnesium citrate Laxative 2-4 ml/kg PO stat
Magnesium hydroxide Antacid 5-10 ml/cat PO q 8 - 24hrs
Cathartic 2-6 ml/cat PO q 24hrs
Magnesium salts Laxative 2-5 g/cat PO q 24hrs
Magnesium sulphate (25%) Hypomagnesemia 5-15 mmol/cat IM, IV over 1 - 2 hrs
Mannitol 5-20% Oliguric renal failure 0.25-1.0 g/kg IV over 15-60 min q 4 - 6hrs to maintain urine flow
Glaucoma 1-3 mg/kg IV over 15-20 min
CNS oedema 1.5 mg/kg IV stat
Marbofloxacin (Zenequin) Susceptible infections 2.75-5.5 mg/kg PO q 24hrs
Maropitant (Cerenia ™ ) Anti-emetic 1.0 mg/kg SQ/PO q 24 hrs for 4 days, then rest 2 days
Mebendazole Parasites 22 mg/kg PO q 24hrs for 3 days
Meclizine (antihistamine) Motion sickness, nausea 12.5 mg/cat PO q 24hrs, 1 hr before driving
Medetomidine Chemical restraint, sedation, analgesia, muscle relaxant 50-150 μg/kg SQ, IM stat
Medium chain triglycerides Chylothorax 14 ml/cat with each meal PO as needed
Primary lymphangiectasia, Exocrine pancreatic insufficiency 14 ml/cat PO q 6 - 8hrs
Medroxyprogesterone acetate (MPA-50; 50mg/ml) Prevent abortion 1-2 mg/kg IM once weekly, stop 7-10 days before parturition
Urine marking, anxiety, intraspecies aggression, skin conditions 10-20 mg/kg SQ as needed, up to 3 injections per year
Skin conditions 50-100 mg/cat SQ, IM q 3 - 6mths as needed
Behavioural disorders 100 mg/cat IM then
30-50 mg/cat monthly
Megestrol acetate (Ovarid) (WARNING: carcinogenic, diabetogenic) Gingivitis 2.5-5.0 mg/cat PO q 24hrs for 10 days, then q48hrs for 5 treatments, then as needed
Urethritis 2.5-5.0mg/cat PO q 24 - 48hrs for 14-21 days until remission, then 1-2 weeks
Miliary dermatitis, eosinophilic granuloma complex 2.5 mg/cat PO q 24hrs for 10 days then q48hrs
Eosinophilic granuloma complex 0.5 mg/kg/day PO for 7-14 days
Eosinophilic ulcers 5-10 mg/cat PO q 48hrs for 10 - 14 treatments then q 2nd week
Oestrus prevention 2.5-5.0 mg/cat PO q 7 days
Asthma 5 mg/cat PO q 24hrs for 4 months, then weekly for 4 weeks
Chemical contraception 5.0 mg/cat PO q 24hrs for 3 days, then weekly as needed
Meglumine antimonate Leishmania spp 5-30 ml/cat IV, IM, IP q 48 - 72hrs
Meloxicam (COX-2 inhibitor) Antiinflammatory 0.1 mg/kg PO q 24hrs as needed
Melphalan (nitrogen mustard alkylating agent) Multiple myeloma 0.05 mg/kg PO q 24hrs for 2 weeks, then q48hrs
Ovarian carcinoma, multiple myeloma, lymphoreticular neoplasms, osteosarcoma, mammary or pulmonary neoplasms, FIP, Feline leukemia 2 mg/m2 PO q 48hrs
Mepiridine (pethidine) Sedation 1-5 mg/kg IM q 2 - 4hrs
Mepivacaine Local analgesia 1-5 ml of 2% solution SQ as needed
6-Mercaptopurine Chronic myelocytic leukaemia, Lymphoma 2 mg/kg PO q 24hrs
Meropenem Susceptible infections 20 mg/kg IV q 8hrs
Meningitis 40 mg/kg IV q 8hrs
Mesna Haemorrhagic cystitis associated with cyclophosphamide 40% of cyclophosphamide dose PO, IV, IM, SQ q 3hrs x 6 at time of cyclophosphamide treatment, follow with repeat dose (24 hr infusion)
Metamucil Laxative 2-4 g/cat in moistened food q 12 - 24hrs
http://en.wikipedia.org/wiki/Metaproterenol Metaproterenol sulphate] (ß2-agonist) Bronchodilation 0.325-0.65 mg/kg PO q 4 - 6hrs
Metaraminol (α1-agonist) Vascular support during shock 0.01-0.1 mg/kg IV slowly stat
http://en.wikipedia.org/wiki/Metformin Metformin] Hyperglycaemia (non-insulin-dependant diabetes mellitus) 2 mg/kg PO q 12hrs
Methazolamide Glaucoma 1-2 mg/kg PO q 12hrs
Methenamine hippurate Urinary antiseptic 250 mg/cat PO q 12hrs (use with extreme caution)
Methicillin (ß-lactam antibiotic) Susceptible infections 20 mg/kg IM, IV q 6hrs
Methimazole Hyperthyroidism 5 mg/cat (induction) PO q 8hrs, followed by
2.5-5.0 mg/cat PO q 8 - 12hrs
(DL) Methionine (essential AA) Urinary acidifier 0.2-1.5 g/cat (Adult cats only) PO q 24hrs
Methocarbamol (guaifenesin-analogue) Muscle relaxation 20-66 mg/kg PO q 8 - 12hrs
Relief of moderate conditions 44 mg/kg IV
Controlling effects of strychnine and tetanus 55-220 mg/kg; give 1/2 dose rapidly until relaxation occurs and continue at 20-66 mg/kg (not to exceed 330 mg/kg/day) IV as needed
Methohexital (thiopentone analogue) Anaesthesia induction 2.5% solution: 11 mg/kg IV stat
Methotrexate sodium Chemotherapy 2.5 mg/m2 PO q 24hrs or 2 - 3 x weekly, in a protocol on day 14 with 5 mg prednisolone PO q 12hrs
Carcinomas, sarcomas 10-15 mg/m2 PO q 1 - 3 weeks
Methoxamine (α1-agonist) Vasopressor: cardiac arrest, shock 200-250 μg/kg or 40-80 μg/kg IM stat
Methoxyflurane Inhalation anaesthesia Induction: 3%, Maintenance: 0.5-1.5% Inhalation stat
Methscopolamine bromide Anti-emetic 0.3-1.0 mg/kg PO q 8hrs (use cautiously)
Methylcellulose Laxative 1.0-1.5 g/cat PO as needed
Methylene blue 0.1% Indicator dye 3 mg / 250 ml 0.9% NaCl IV over 30-40 min
Antidote 1-1.5 mg/kg IV stat
Methylprednisolone Antiinflammatory 0.5-1.0 mg/kg PO q 12hrs
Methylprednisolone acetate sinophilic ulcers, linear granulomas 10-40 mg/cat SQ, IM, intralesional q 2 weeks x 2 - 6 treatments
Asthma 1-2 mg/kg IM q 7 days
Others 5.5 mg/kg SQ, IM 1 - 24 weeks
Methylprednisolone sodium succinate Spinal trauma 15-30 mg/kg IV q 2hrs, then q 6hrs for 2 days, then taper dose over 5 - 7 days
4-Methylpyrazole Antifreeze toxicity 20 mg/kg IV stat
15 mg/kg IV q 12hrs for 2 days, then
5 mg/kg IV
Methyltestosterone Anabolic steroid 1-2 mg/kg PO q 24hrs
Testosterone-responsive dermatoses 1-2.5 mg/cat PO q 48hrs
Metoclopramide Gastric motility disorders, antiemetic 0.2-0.5 mg/kg PO, IM, SQ q 8hrs
1.0-2.0 mg/kg IV q 24hrs
Gastric reflux 0.2-0.4 mg/kg PO q 8hrs, 30 mins before meals
[[Dysautonomia|Feline dysautonomia] 0.3 mg/kg PO q 8hrs
Metoprolol (ß1-agonist) Atrial fibrillation, [hypertrophiccardiomyopathy.htm hypertrophic cardiomyopathy] 2-15 mg/cat PO q 8hrs
12.5-25.0 mg/cat PO q 12hrs
Metronidazole Colitis, Coccidiosis, Tritrichomoniasis, anaerobic infections 10-25 mg/kg PO q 24hrs for 7 - 14 days
Gingivitis 50mg/kg PO q 24hrs
Mirtazepine Antiemetic 3mg/cat PO q 3days
Misoprostol (synthetic PGE1) Mucosal protectant 3-5 μg/kg PO q 12hrs as required
Miconazole Fungal infections 1-3 cm topically q 24hrs for 2 - 4 weeks
Midazolam (BZD analogue) Preanaesthetic, sedation 0.06-0.22 mg/kg IM, IV stat
Milbemycin oxime Heartworm and intestinal worm prophylaxis 0.5-2.0 mg/kg PO monthly
Milk thistle (silymarin) Free radical scavenger 50-250 mg/kg PO q 12hrs
Mineral oil Laxative 5-10 ml/cat PO, per rectum q 12hrs
Minocycline (tetracycline antibiotic) Susceptible infections 5-15 mg/kg PO q 12hrs
Mithramycin Hypercalcemia, testicular cancer, malignancies 0.25-0.50 μg/kg IV q 24hrs x 2
Mitotane (o,p-DDD) Pituitary-dependant [Cushings.htm hyperadrenocorticism] 25 mg/kg PO q 7 days (maintenance)
75-100 mg/kg/week PO
Mitoxantrone Anticancer chemotherapy 6.0-6.5 mg/m2 IV q 3-4 weeks x 4 - 6
Morphine sulphate Antitussive, analgesic 0.05-0.1 mg/kg SQ, IM q 4 - 6hrs
Mycobacterial cell wall extract Immunostimulation 1.5 ml IV, deep IM q 24hrs x 1
Nadolol (ß1/2- antagonist) Hypertension 0.25-0.5 mg/kg PO q 12hrs
Nafcillin (ß-lactam antibiotic) Resistant staphylococcal infections 10 mg/kg PO, IM q 6hrs
Nalbuphine hydrochloride (synthetic opioid) Analgesic 0.75-1.5 mg/kg IV q 6 - 8hrs
Nalorphine Opioid antagonist 0.1 mg/kg IV stat
Naloxone HCl stereotypic behaviour 20 mg SQ
Shock 2 mg/kg IV q 1hr
Opioid antagonist 0.01-0.04 mg/kg IV to effect, repeat as needed
Naltrexone (Trexan) Behavioural problems, lick granuloma 2.2 mg/kg PO q 12 - 24hrs
Nandrolone decanoate Anaemia 10-50 mg/cat IM weekly
Natamycin Ocular fungal infections topically q 3 - 8hrs
N-acetylcysteine see Acetylcysteine
Neodarbazine Antiemetic 4.5-9.0 mg/kg PO q 12hrs
Neomycin Susceptible infections 7 mg/kg IM, IV, SC q 24hrs (nephrotoxic)
Hepatic encephalopathy 10-20 mg/kg per rectum q 6hrs
Neostigmine Diagnostic aid for [myasthenia%20gravis.htm myasthenia gravis] 20 μg/kg with 0.04 mg/kg of atropine IV stat
2 mg/kg/day PO q 24hrs, divided doses
Niacin (Niacinamide) Hypertriglyceridemia 50-100 mg/day PO q 24hrs
Vacor toxicosis 500-1000 mg IM stat, then
200 mg PO q 24hrs for 2 weeks
Nikethamide Antidote for CNS-depressant drugs 7.8-31.2 mg/kg IV, IM, SQ stat, then as needed
Nitrofurantoin Urinary tract infection 2.5-4.0 mg/kg PO q 6 - 8hrs
Prophylactic dose 4 mg/kg PO q 24hrs
Nitroglycerin 2% ointment Vasodilator for pre-load reduction 1/8-1/4 inch (0.3-0.6cm) cutaneously q 6 - 8hrs
Nitroprusside (vasodilator) Acute CHF 0.5-10 µg/kg IV q 1 min
Norepinephrine bitartrate Positive ionotrope 0.05-0.3 µg/kg IV q 1 min
Nortriptyline (tricyclic antidepressant - noradrenaline reuptake inhibitor) Behaviour disorders 0.5-2.0 mg/kg PO q 12 - 24hrs
Novobiocin Susceptible infections 10 mg/kg PO q 8hrs
Nystatin Susceptible infections 100,000 IU PO q 8hrs
Ofloxacin (fluoroquinolone) Susceptible infections 2.5-10.0 mg/kg PO q 12hrs
Olsalazine sodium Inflammatory bowel disease 10-20mg/kg PO q 12 - 24hrs
Omega fatty acids see Derm caps
Omeprazole (Losec) - proton pump inhibitor Gastritis, gastric ulceration 5 mg/cat PO q 24hrs
Ondansetron - 5-HT3 receptor antagonists Antiemetic 0.5-1.0 mg/kg PO q 24hrs
Orbifloxacin Susceptible infections 2.5-7.5 mg/kg PO q 24hrs
Ovarid (see Megestrol acetate)
Oxacillin Susceptible infections 22-40 mg/kg PO q 8hrs
Oxazepam Appetite stimulant 2.0-2.5 mg/cat PO q 12hrs
Oxtriphylline Bronchodilator 6 mg/kg PO q 8 -12hrs
10-15 mg/cat PO q 6 - 8hrs
Oxybutynin (anticholinergic) Detrusor hyperspasticity 0.5 mg/cat PO q 8 - 12hrs
Oxymetholone Anabolic agent 1 mg/kg PO q 12 - 24hrs
Oxymorphone Preanaesthetic 0.1-0.2 mg/kg IM, IV with ACP or atropine
Oxytetracycline Susceptible infections 55-82.5 mg/kg PO q 8hrs
Haemobartonella 20-40 mg/kg PO q 8hrs for 3 weeks
Oxytocin Acute metritis 0.5-1.0 IU/kg IV, IM, SQ q 2hrs for max of 3 doses
Paclitaxel (mitotic inhibitor) Chemotherapy 5 mg/kg IV pre-treat for anaphylaxis
Pancreatic enzymes Exocrine pancreatic insufficiency 1-2 tablets, 1-2 teaspoons PO 20 mins prior to food, bid
Pancuronium bromide Paralytic agent for controlled anaesthesia 0.044-0.11 mg/kg IV stat
Paregoric Antidiarrhoeal 0.05-0.06 mg/kg PO q 8 - 12hrs
Paromomycin (aminosidine) Cryptosporidium spp 125-165 mg/kg PO q 12hrs for 5 days
Paroxetine (SSRI) Behaviour modification 1.25-2.5 mg/cat PO q 24hrs
Parvaquone Toxoplasmosis 10-30 mg/kg IM q 24hrs
D- penicillamine Progressive hepatitis 10-15 mg/kg PO q 12hrs
Penicillin G Susceptible infections 20-30 mg/kg PO q 6 - 8hrs
Pentazocine Analgesia 2.2-3.3 mg/kg IV, IM, SQ q 4hrs
Pentobarbital General anaesthesia 25-30 mg/kg IV to effect
Status epilepticus 5-15 mg/kg IV to effect
Sedation 2-4 mg/kg PO q 6hrs
Pentosan polysuphate Disease modifying agent, arthritis 3 mg/kg IM, SQ q 7 days
Pentoxifylline (phosphodiesterase antagonist) Dermatomyositis 100 mg/cat PO q 8 - 12hrs
Autoimmune skin diseases 10-15 mg/kg PO q 24hrs
Periactin Appetite stimulant 1-4 mg/cat PO q 12 - 24hrs
Petrolatum, white Laxative 1-5 ml/cat PO q 24hrs
Phenamidine isethionate Babesiosis 7.5 mg/kg IM, SQ q 24hrs x 2
Phenobarbital Status epilepticus 2-30 mg/kg PO, IM, IV q 12hrs
Phenoxybenzamine HCl (α-adrenergic antagonist) Acute hypertension from Pheochromocytoma 0.5 mg/kg PO q 12hrs
Detrusor areflexia 2.5-10 mg/cat PO q 8 - 12hrs
Relaxation of urinary sphincter 0.5 mg/kg IV stat
Endotoxemia 2.5-10.0 mg/cat PO q 24hrs
Phentolamine (α-adrenergic antagonist) Hypertension from Phaeochromocytoma 0.02-0.1 mg/kg IV stat
Phenylephrine (α-adrenergic agonist) Vasopressor, decongestant, mydriatic 0.15 mg/kg IV as needed
Phenylpropanolamine Urethral sphincter incompetence 1.5-2.0 mg/kg PO q 8hrs
Phenytoin Seizures, ventricular arrhythmias 2-3 mg/kg PO q 24hrs
Phosphate (K or Na) Hypophosphatemia 4.5 mg/dl serum phosphate IV over 6 hrs
Physostigmine (parasympathomimetic) Myasthenia gravis, Glaucoma, magic-mushroom intoxication 0.25-5.0 mg/cat IM q 12hrs
Physostigmine (0.5%) Feline dysautonomia apply 1/8 inch topically q 8hrs
Phytomenadione See Vitamin K1
Pilocarpine 1% ophthalmic Dysautonomia, glaucoma 1 drop topically q 6hrs
Piperacillin sodium Susceptible infections 25-50 mg/kg IV, IM q 8 - 12hrs
Piperacillin-tazobactum Susceptible infections 25-50 mg/kg IV q 6 - 8hrs
Piperazine Helminths 44-66 mg/kg PO repeat in 3 weeks
Piroxicam (NSAID, non-selective COX inhibitor) Analgesia, anticancer 0.3 mg/kg PO q 24 - 72hrs
http://en.wikipedia.org/wiki/Plicamycin Plicamycin] Hypercalcemia, testicular cancer, malignancies 0.25-0.50 µg/kg IV q 24hrs x 2
Polyethylene glycol Lubricant, intestinal cathartic 25 ml/kg PO then repeat in 2-4 hrs before GI exam
Polyethylene glycol electrolyte solution Electrolyte replacement 25 ml/kg PO q 2 - 4hrs
Polysulfated glycosaminoglycans Degenerative joint disease 2-5 mg/kg IM q 3 - 5days
Potassium chloride Potassium supplementation 0.10-0.25 ml/kg PO q 8hrs
Hypokalemia 0.5 mEq/kg IV not to exceed 0.5 mEq/kg/hr
1-3 mEq PO. IV q 24hrs
10-40 mEq/500 ml of fluid, depending on serum potassium IV, SQ stat
Potassium citrate [flutd.htm Calcium oxalate urolithiasis] 50-75 mg/kg PO q 12hrs
Potassium gluconate Hypokalemic polymyopathy 5-8 mEq/cat PO q 12 - 24hrs
Potassium iodide Sporotrichosis spp, pythiosis 30-100 mg/cat PO q 24hrs for 10-14 days
Potassium permanganate (1:2000) Strychnine toxicosis 5 ml/kg in gastric lavage PO stat
Potassium phosphate see Phosphate
Povidone-iodine Burns Apply light coating Topically q 12 - 24hrs
Pralidoxime chloride (2-PAM) Organophosphate toxicosis 20 mg/kg IV, IM, SQ q 12hrs
Praziquantel Tapeworms 5 mg/kg PO stat
Paragonimus spp 25 mg/kg PO q 8 - 12hrs for 2 days
Prazosin (α1-adrenergic antagonist) After load reductions 0.5-2.0 mg/cat PO q 8 - 12hrs
Urethral obstruction 0.5-2.0 mg/cat (0.07mg/kg) PO q 8 - 12hrs
Prednisolone Eosinophilic ulcers, plasma cell gingivitis 1-2 mg/kg PO q 24hrs (each evening)
Plasmacytic lymphocytic enteritis 1-2 mg/kg PO q 12hrs, then taper dose weekly
Urethritis, persistent hematuria 2.5-5.0 mg/kg PO q 24 - 48hrs
Anti-inflammatory 2.2 mg/kg PO q 12 - 24hrs
Hypoadrenocorticism 1 mg/kg PO q 12hrs
Chronic therapy 2-4 mg/kg PO q 48hrs
Immune-mediated skin diseases 1.1-2.2 mg/kg PO q 12hrs until remission, then taper
FIP 4 mg/kg PO q 24hrs with cyclophosphamide
Allergy 1 mg/kg PO, IM q 12hrs
Immunosuppression 3 mg/kg PO q 12hrs
Lymphosarcoma, myeloproliferative disorders 1 mg/kg PO q 24hrs
Multiple myeloma 0.5 mg/kg PO q 24hrs
Prednisolone acetate Hypoadrenocorticism 0.1-0.2 mg/kg IM q 12hrs
Prednisolone sodium phosphate Shock 15 mg/kg IV q 4 - 6hrs
Prednisolone sodium succinate Allergic bronchitis, asthma 15-30 mg/kg IV, IM to effective dose
Shock 15-30 mg/kg IV q 4 - 6hrs
CNS trauma 15-30 mg/kg IV then taper to effective dose
Prilium Congestive heart failure and Chronic renal disease 150 mg syrup PO 0.5ml q 24hrs
Primaquine phosphate Feline babesiosis 0.5 mg/kg PO, IM stat
Procainamide Ventricular arrhythmias 62.5 mg/cat PO q 6hrs
Prochlorperazine Antiemetic 0.1 mg/kg IM q 6hrs
0.5 mg/kg PO q 6 - 8hrs
Promazine hydrochloride Preanaesthetic 2.2-6.6 mg/kg IV stat
Antiemetic 1-2 mg/kg IM, IV q 4 - 6hrs
Promethazine HCl Antihistamine, antiemetic 0.2-0.4 mg/kg IV, IM, PO q 6 - 8hrs
Propantheline bromide Acute colitis, irritable bowel syndrome, antiemetic 0.22-0.25 mg/kg PO q 8hrs up to 3 days
Detrusor hyperspasticity, urge incontinence 0.2 mg/kg PO q 6 - 8hrs
Propriomazine Sedation 1.1-4.4 mg/kg IV, IM q 12 - 24hrs
Propionibacterium acnes Immunostimulation, [feline%20leukemia.htm FeLV associated disease], retrovirus infection 15 μg/kg IV biweekly for 2 - 3 weeks
Propofol General anaesthesia Induction: 6-8 mg/kg IV stat
Induction: 2.5-4.0 mg/kg IV with premedication
Maintenance: 0.51 mg/kg IV q min
Propranolol (ß-adrenergic antagonist) Ventricular hypertrophy, aortic stenosis 0.4-1.2 mg/kg PO q 8 - 12hrs
Ventricular arrhythmias 0.02-0.06 mg/kg IV over 2-3 min; q 8hrs
0.25-0.5 mg IV followed by
2.5-5.0 mg PO q 8hrs
hypertrophic cardiomyopathy, valvular insufficiency 2.5 mg/cat PO q 8 - 12hrs
Hypertension 2.5-5.0 mg/cat PO q 8 - 12hrs
Tachyarrhythmias from endocrinopathies 2.5-5.0 mg PO q 8 - 12hrs
Propylthiouracil (PTU) Hyperthyroidism 10 mg/kg PO q 8hrs
50 mg/cat PO q 8 - 12hrs
Prostaglandin F2 alpha Pyometra, Cystic endometrial hyperplasia 0.10-0.25 mg/kg SQ q 24hrs for 3-5 days
Abortion 0.5-1.0 mg/kg; 40 days post-conception SQ 2 injections 24 hrs apart
Protamine sulphate Heparin antagonist 1.0-1.5 mg for every 100 IU heparin IV stat
Pseudoephedrine Nasal decongestant 15-30 mg/cat PO q 8 - 12hrs
Urinary incontinence 0.2-0.4 mg/kg PO q 8 - 12hrs
Psyllium Bulk laxative 1-3 tsp PO q 8 - 12hrs
Pyrantel pamoate Roundworm, hookworm 10 mg/kg PO repeat in 2 weeks
Pyridostigmine bromide Myasthenia gravis(acquired) 1-5 mg PO stat
0.25 mg/kg PO q 24hrs
Antidote (curariform) 0.15-0.30 mg/kg IM, IV
Pyrilamine maleate Antihistamine 12.5-25.0 mg/cat PO q 6hrs
Pyrimethamine Malaria, Neosporosis 0.25-1.0 mg/kg PO q 24hrs
Toxoplasma 0.5-2.0 mg/kg PO q 12hrs for 14 - 28days
Enteroepithelial cycle 2 mg/kg PO q 24hrs for 14 - 28 days
Quinacrine Giardia spp, Coccidiosis 11 mg/kg PO q 24hrs for 5 days
Ranitidine (Zantac) H-2 receptor antagonist for use in gastritis, GI tract ulceration 0.5 mg/kg IV, PO, SQ q 12hrs
Hypergastrinemia associated with chronic renal insufficiency 3.5 mg/kg PO q 12hrs
Retinol (Vit A) Dermatological lesions 625-800 IU/kg PO q 24hrs
Ribavirin Susceptible viral infections 11 mg/kg PO, IM, IV q 24hrs for 7 days
Riboflavin (Vit B12) Bartonellosis (with doxycycline) 5-10 mg/kg PO q 24hrs for 14days
Rifampin Susceptible infections 10-20 mg/kg PO q 24hrs
Ringer's solution Maintenance solution 40-50 ml/kg IV, SC, IP q 24hrs
Ronidazole (Ronivet) Tritrichomoniasis 30 mg/kg PO q 24hrs for 14 days
(warning: low therapeutic margin) 20mg/kg PO q12hrs for 14 days
Roxithromycin Susceptible infections 15 mg/kg PO q 24hrs
Rutin Chylothorax, limb lymphedema 50 mg/kg PO q 8hrs
Selegiline (Fitergol) Cognitive disorders 0.5 mg/kg PO q 24hrs
Hyperadrenocorticism 1-2 mg/kg PO q 24hrs
Selamectin Parasiticide 6 mg/kg Topical q 30days
Selenious acid, sodium selenite Supplementation 0.3 mg/kg PO stat
Selenium Pancreatitis 0.1 mg/kg IV stat
Senna Constipation 5 ml/cat PO q 24hrs
Silver nitrate solution (0.5%) Burns Saturate wet dressing Topically q 12hrs
Silver sulfadiazine Burns Apply light coating Topically q 12hrs
Sodium bicarbonate Renal failure 10-15 mg/kg PO q 8hrs
Toxicoses 50 mg/kg PO q 8 - 12hrs
Hyperkalemic crisis 2-3 mEq IV over 30 mins
Urine alkalisation 0.65-5.85 g PO q 24hrs
Sodium chloride Hypoadrenocorticism 1-5 g PO q 24hrs
Hyponatremia, acute renal failure 1-4 g PO q 8hrs
(0.9% soln) 40-50 ml/kg IV, SQ, IP q 24hrs
Sodium iodide, 20% soln Sporotrichosis spp 0.5 ml/5kg PO q 24hrs
Susceptible infections 20 mg/kg PO q 24hrs for 4 - 6 wks
Sodium phosphate Hypercalcemia Dilute 1-3 g with water (1:1) and give 10-20 ml PO q 8 - 24hrs until stools are soft

Sodium polystyrene sulphonate

Hypercalcemia 8-15 g/cat PO q 8hrs
Sodium thiopental Anaesthesia 3-15 mg/kg IV to effect
[http:// Sorbitol] (70% soln) Stool softener 3 ml/kg PO stat
Sotalol (ß-adrenoceptor antagonist) Ventricular arrhythmias 1-2 mg/kg PO q 12hrs
Spectinomycin Susceptible infections 5-12 mg/kg IM q 12hrs
Spiramycin Toxoplasmosis 12.5-23 mg/cat PO q 24hrs
Spironolactone Diuretic: heart failure 2-4 mg/kg PO
Primary hyperaldosteronism 1 mg/kg PO q 12hrs
Hepatic insufficiency 12.5 mg/cat PO q 24hrs
Spironolactone / hydrochlorothiazide Diuretic, antihypertensive agent 1-2 mg/kg PO q 12-24hrs
Stanozolol Anabolic agent, anaemia 1-2 mg/cat PO q 12hrs
10-25 mg/kg PO q 7days
Staphage lysate Immune stimulant 0.1-0.2 ml/cat SQ then
incremental doses to 1.0ml SQ 1 - 2 for a week, then
0.5 ml SQ weekly for 10 - 12 weeks
Staphylococcal A Immune stimulant 20 μg/2.75kg IP q 3 - 5 days
Streptomycin, dihydro Leptospirosis, endocarditis, tuberculosis, Yersinia pestis 10 mg/kg IM q6hrs
Styrid caricide (styrylpyridium chloride plus diethylcarbamazine) Antiparasiticide 6.7mg/kg PO q 24hrs
Succinylcholine Paralysis 0.06-0.11 mg/kg IV stat
Sucralfate Gastrointestinal ulceration 250-500 mg/cat PO q 8 - 12hrs
Hemorrhagic pancreatitis, vomiting with renal failure 40 mg/kg PO q 8hrs
Sufentanil (opioid agonist) Premedicant with ACP 2 μg/kg (max dose 5 μg/kg) IV stat
Sulfadiazine Nocardiosis 220 mg/kg PO for 1 treatment, then
50-110 mg/kg PO q 12hrs
Toxoplasmosis 15-50 mg/kg (with pyrimethamine) PO q 24hrs, divided, for 14 days
Sulfadiazine / trimethoprim Susceptible infections 30 mg/kg PO, SQ q 24hrs
Meningitis 15 mg/kg PO, IV q 8 - 12hrs
Nocardiosis 30-60 mg/kg PO, SQ q 12hrs
Sulfadimethoxine Susceptible infections 25-50 mg/kg PO, IM, IV q 12 - 24hrs for max of 21days
Coccidiosis 55 mg/kg (loading), then 27.5 mg/kg PO q 24hrs
Sulfaguanidine Coccidiosis 100-200 mg/kg PO q 8hrs
Sulfamethazine, sulfamerazine Coccidiosis 200 mg/kg (loading), then 50 mg/kg PO q12hrs
Sulfamethoxazole Susceptible infections 100 mg/kg (loading), then 50 mg/kg PO q 12hrs
Sulfamethoxazole / trimethoprim Susceptible infections 15 mg/kg PO q 12hrs
Sulfasalazine Lymphocytic plasmacytic enteritis 250 mg/cat PO q 8hrs for 3 days, then q 24hrs
Inflammatory bowel disease 20-25 mg/kg PO q 12 -24hrs
Susceptible bacterial infections 20 mg/kg PO q 12hrs
Sulfisoxazole Urinary tract infections 50 mg/kg PO q 8hrs
Sulfobromophthalein sodium Hepatic function testing 5 mg/kg IV collect serum 30 min after BSP injection
Suprofen ophthalmic Allergic conjunctivitis 1% Topically q 8 - 12hrs
Tamiflu Viral disease 2-4 mg/kg PO q 12hrs within 48hrs of infection
Taurine Taurine deficiency, dilated cardiomyopathy 250-500 mg/cat PO q 12hrs
Central retinal degeneration 250 mg/cat PO q 12 - 24hrs
Telazol (Zoletil - Tiletamine / zolazepam) Restraint 6.6 mg/kg IM stat
Anaesthesia 11-15 mg/kg IM stat
Temaril-P (Trimeprazine and prednisolone) Allergy 0.7-1.1 mg/kg PO q 12 - 24hrs
Terbinafine (Lamasil) Fungal infections 3-10 mg/kg PO q 24hrs for 3 - 4 wks
Terbutaline (ß2-adrenoceptor agonist) Bronchodilator 0.01 mg/kg SQ, IM q 4hrs
1.25-2.5 mg/cat PO q 8hrs
Testosterone cypionate Hormone replacement 2.2 mg/kg IM q 2 - 3 days
Testosterone, methyl Anabolic effects 1-2 mg/kg; max 30 mg/day PO q 24hrs
Testosterone propionate Feline symmetrical alopecia 12.5 mg with oestrogen IM stat
Urinary incontinence 5-10 mg IM stat
0.5-1.0 mg/kg IM q 2 - 3 days
Tetanus toxoid Tetanus treatment 0.2 ml (test dose), then give 100-500 units/kg SQ watch for anaphylaxis for 30 min
Tetracycline hydrochloride Acute bronchitis 10-25 mg/kg PO q 8 - 12krs
[[Rickettsia spp] 15 mg/kg PO q 8hrs for 21 days
Mycobacterium spp 22 mg/kg PO q 8hrs
Susceptible infections 1-5 mg/kg IV, IM q 8 - 12hrs
Theophylline Bronchodilator 4 mg/kg PO, IM q 8 - 12hrs
Theo-Dur (Sustained release) Bronchodilator 20-25 mg/kg PO q 24hrs, at night
Thiabendazole Heartworm disease adulticide 35 mg/kg PO q 12hrs for 20 days
Strongyloides 125 mg/kg PO q 24hrs for 3 days
Thiacetarsamide Heartworm adulticide 2.2 mg/kg IV q 12hrs for 2 days
Thiamine (Vit B12) Thiamine deficiency 1-2 mg/cat IM q 12hrs until regression of symptoms
100-250 mg/kg SQ q 12hrs
Thiamylal sodium Anaesthesia 8.8-13.3 mg/kg IV after tranquilisation
Thioguanine Lymphocytic and granulocytic leukaemia 25 mg/m2 PO q 24hrs for 1-5 days, then 130 days
Thyroid Hypothyroidism 15-20 mg/kg/day PO q 24hrs
Thyrotropin (TSH) Provocative testing 1 IU/kg IM Collect baseline and post-TSH samples
Acanthosis nigrans, hypothyroidism 1-2 IU SQ q 24hrs for 5 days
L-Thyroxine (levothyroxine) Hypothyroidism 0.5 mg/m2 PO q 12hrs
20-30 μg/kg PO q 24hrs
Ticarcillin Susceptible infections 33-50 mg/kg IM, IV q 6 - 8kg
55-110 mg/kg IM, Iv q 4 - 6hrs
Ticarcillin/clavulanate As above
Tiletamine / zolazepam Minor procedure 9.7-11.9 mg/kg IM stat
Castration 10.6-12.5 mg/kg IM do not exceed 72mg/kg with repeat doses
Spey 14.3-15.8 mg/kg IM stat
Tinidazole Stomatitis 15 mg/kg PO q 24hrs
Tiopronin Cystine urinary calculi 15-20 mg/kg PO q 12hrs
Tolazoline Xylazine reversal 2 mg/kg IV stat
Tolfenamic acid (Tolfedine) Analgesia 4 mg/kg IM, SQ, PO q 24 hrs up to 5 days, 3 out of 7 days for long term Rx
Toltrazuril (Baycox) Coccidiosis 5-20 mg/kg PO q 24hrs x 2-5 treatments
Toluene Anthelmintic 267 mg/kg PO repeat in 2-4 weeks
Tramadol Opioid analgesia 1-2 mg/kg PO q 8 - 12hrs
12.5 mg/cat PO q12hrs
Tretinoin [acne.htm Feline acne], nasal hyperkeratosis 0.25-0.5 mg/kg PO q24hrs for 7 days
Triamcinolone Gingivitis, pododermatitis 2-4 mg PO q 24 - 48hrs
Hypokalemic polymyopathy 0.5-1.0 mg/kg PO q 24hrs
Antiinflammatory 0.11-0.22 mg/kg IM, SQ stat
Pannus, eosinophilic keratitis, episcleritis 4 mg Subconjunctival stat
Triamcinolone acetonide Esophageal stricture 1-2 mg/cat submucosal stat
Glucocorticoid effect 0.1-0.2 mg/kg IM, SQ q 24hrs
Triamterene Diuretic 1-2 mg/kg PO q 12hrs
Trientine hydrochloride Chelating agent 10-15 mg/kg PO q 12hrs
Triethylene thiophosphoramide Bladder neoplasia 30 mg/m2 Intravesicular q 3 - 4wks
Thiethylperazine Antipsychotic 0.13-0.2 mg/kg IM q 8 - 12hrs
Trifluoperazine Antipsychotic 0.03 mg/kg IM q 12hrs
Triflupromazine Behaviour modification 0.1-0.3 mg/kg IM, PO q 8 - 12hrs
Trifluridine ophthalmic herpes infection 0.1% soln, 1-2 drops Topically q 34 - 8hrs
Triiodothyronine (T3) Hypothyroidism 4.4 µg/kg PO q 8 - 12hrs
Trimethoprim/sulfadiazine Susceptible infections 15 mg/kg PO, SQ, IV q 8 - 12hrs
Tripelennamine Antihistamine 1 mg/kg PO, IM q 12hrs
Trypan blue Feline babesiosis 4 mg/kg IV stat
Tylosin GI bacterial overgrowth 6.6-11 mg/kg IM q 12 - 24hrs
Chronic colitis 25 mg PO q 8hrs
Urea Osmotic 300 mg IV stat
Urofollitropin Hypogonadotropic anovulation 2 mg/cat IM q 24hrs
Ursodeoxycholic acid (Ursodiol) Chronic hepatitis 5-15 mg/kg PO q 24hrs
Valproic acid Epilepsy 25-65 mg/kg PO with Phenobarbital
10-105 mg/kg PO alone
Vanadium Hyperglycaemia 0.2 mg/kg PO q 24hrs
Vasopressin, aqueous Central diabetes insipidus 10 mU/cat IV, IM as needed
Vasopressin, tannate in oil Central diabetes insipidus 2.5-5.0 U/cat IM q 1- 7 days
Vecuronium bromide Paralytic agent for controlled anaesthesia 40 μg/kg IV over 30 min
Verapamil (calcium channel blocker) Supraventricular arrhythmias 10-15 mg/kg PO q 24hrs, divided
Conversion of rapid supraventricular tachycardia 1.1-4.4 mg/kg PO q 8 - 12hrs
Vidarabine Ocular herpesviral infection 1/8 inch Topically q 6 - 8hrs
Vinblastine Mast cell tumour, [lymphosarcoma.htm LSA] 0.1-0.4 mg/kg IV q7-14 days
Vincristine Thrombocytopenia 0.01-0.025 mg/kg IV q 7-10 days
Lymphosarcoma 0.5-1.0 mg/m2 IV once weekly
Neoplasia 0.5-0.75 mg/m2 IV q 7 - 14days
Viokase Exocrine pancreatic insufficiency 325 mg PO with each meal
Vitamin A Dietary supplement 400 U/kg PO q 24hrs for 10d
Vitamin B1 see Thiamine
Vitamin B2 5-10 mg/cat PO q 24hrs
Vitamin B complex Vitamin B deficiency 0.5-1.0 ml IV, IM, SQ q 24hrs
Vitamin C see Ascorbic acid
Vitamin D (dihydrotachysterol) Hypocalcemia 0.02 mg/kg PO Initially, then
0.01 mg/kg PO q 24 - 48hrs
Vitamin D2 (ergocalciferol) Hypocalcemia 4000-6000 U/kg PO q 24hrs, initially, then
500-1000 U/kg PO q 24 - 48hrs
Vitamin D3 (calcitriol - 1-25, dihydroxy vitamin D3) Hypocalcemia 0.03-0.06 μg/kg PO q 24hrs
Chronic renal disease 0.025 μg/kg PO q 24hrs
Vitamin E Vitamin E deficient myositis, [yellow%20fat%20disease.htm steatitis] 10-20 IU/kg PO q 12hrs
autoimmune skin diseases 400-600 IU/cat PO q 12hrs
Vitamin K1 Deficiency, hepatopathy 1-3mg/kg SQ, PO q 12hrs for 4 - 6 weeks
5mg/kg PO q 24hrs, divided doses
Warfarin Aortic thromboembolism 0.06-0.20 mg/kg PO q 24hrs. Maintain PTT at 2 - 2.5 times normal
Xylazine Muscle relaxation 1.1-2.2mg/kg IM, SQ stat
Emetic 0.44mg/kg IM
Zafirlukast Leukotriene receptor antagonist 0.15-0.2mg/kg PO q 12 - 24hrs
Zidovudine (AZT) Antiviral 5-20mg/kg SQ, PO q 8 - 12hrs
Zinc Antioxidant 2-3mg/kg PO q 24hrs
Zithromax (Azithromycin)] Susceptible infections 5mg/kg PO q 24 - 48hrs
Susceptible infections 80mg stat PO weekly x 3
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