
Cat Formulary  VetInfo  
All medications to be given orally unless otherwise noted. IM = intramuscular injection; IP = intraperitoneal injection; SC = subcutaneous injection; IV = intravenous injection  
Drug  Available Formulations  Indication  Dosage  Major Precautions /Notes 
acemannan  Acemanan Rx  2mg/kg IP or SC per week x 6 weeks  we do not use this medication in our practice  
acepromazine  PromAce Rx, generics; 10mg/ml inj., 2mg, 5mg, 10mg tablets  1) Sedation, car sickness 2) Preanesthesia  1) up to 1mg/lb, lower dosages often work well 2) 0.01 to 0.02mg/lb  
acetaminophen  Tylenol Rx  NONE  Never administer acetaminophen to cats!  
acetazolamide  Diamox 125mg, 250mg  glaucoma  48mg/kg every 8 to 12 hours  
acetylcysteine  Mucomyst Rx  1) Tylenol toxicity 2) eye ulcers  1) 140mg/kg followed by 70mg/kg q4hrs x 5 doses 2) 2% solution topically q2hr  
Adequan (polysulfatedglycosaminoglycan)  100mg/ml  arthritis, chronic cystitis  4.4mg/kg IM  usually given weekly for 5 doses then every 3 weeks 
albendazole  Valbazen 113.6mg/ml suspension  1) coccidia 2) giardia  1) 2550mg/kg every 12hr x 3 days 2) 25mg/kg every 12hr x 2 days  
albuterol  Ventolin or Proventil 2,4,5mg tablets, 2mg/5ml syrup  2050ug/kg every 6 hrs  may use 100ug/kg for brief periods; available in inhalant form  
aluminum carbonate gel  Basalgel 500mg capsules  10 to 30 mg/kg with meals or every 8 hrs  
aluminum hydroxide  Amphojel 64mg/ml oral suspension, 600mg tablet  1030mg/kg with meals or every 8 hrs.  
amikacin  AmiglydeV, generics 5mg/ml injection  5mg/kg SC or IV  Use with caution in cats, causes kidney failure in some patients  
aminopentamide  Centrine, 0.2mg tablet, 0.5mg/ml injection  vomiting  0.1mg/cat every 8 to 12 hours  not very effective 
aminophylline  generics  bronchodilation  6.6mg/kg every 12 hrs  
amitraz  Mitban  demodectic mange  use 1/2 of dog strength (10.6ml per 4 gal water)  
amitriptyline  Elavil, 10mg, 25mg, 50mg tabs  1) painful urination 2) inappropriate urination  1) 5mg to 10mg/cat once daily at night 2) 1 to 2mg/kg every 12 hrs  
amlodipine  Norvasc  high blood pressure  2.5mg tablets  0.625mg (1/4th tab) every 24hrs, may give up to 1.25mg/day if necessary 
ammonium chloride  generics  urinary acidification  800mg/cat (around 1/4th tsp usually)  mix with food 
amoxicillin  AmoxiTabs, AmoxiDrops, others; 50mg, 100mg tabs, 50mg/ml oral suspension  antibiotic  10mg/lb every 12 hours  
amoxicillin/clavulanic acid  Clavamox, 62.5mg/ml oral suspension, 62.5mg, 125mg tabs  antibiotic  62.5mg every 8 to 12 hours per cat  
ampicillin  generics  antibiotic  10mg/lb  
amprolium  Corid; 20% powder, 9.6% solution  coccidia  approximately 1.25gm/day  
aspirin  generics, 81mg tablets  1) inflammation 2) platelet inhibition in cardiomyopathy  1) 10 to 20mg/kg every 48hrs 2) 81mg every 48hrs  some dosing schedules call for every 72 hr use since aspirin can be toxic to cats 
atenolol  Tenormin; 25mg, 50mg tablets, 25mg/ml oral suspension  1) heart arrhythmia's 2) hypertension  6.25 to 12.5mg/cat every 12 hrs  
aurothioglucose  Solganol 50mg/ml injection  immune mediated diseases  0.5 to 1mg/cat every 7 days (intramuscular injection)  
azathioprine  Imuran; 50mg tablets  immune mediated diseases  1mg/kg every 48hrs  use in cats carries a high risk for liver failure 
azithromycin  Zithromax, 1gm packets for suspension, 250mg tablets  chronic upper airway disease  5mg/kg daily for 3 days, then every 2 to 3 days  mixing partial packets is acceptable if measured carefully 
AZT  Retrovir; 10mg/ml syrup  Feline immuno deficiency virus  15mg/kg every 12 hr (higher dosages have been used)  It is considered best to use this for 3 weeks or less 
Benazepril  Lotensin; 5mg, 10mg tablets  high blood pressure  0.25 to 0.5mg/kg every 24 hrs  
bethanechol  Urecholine; 5mg tablets  1.25 to 5mg/cat every 8 hours  
bismuth subsalicylate  PeptoBismol; 262mg/15ml  1ml/kg every 8hrs  Use regular strength only; use with caution due to salicylates  
buspirone  Buspar; 5mg and 10mg tablets  1) urine marking 2) aggression  2.5 to 5mg/cat every 12 to 24 hours  NOTE: often given to the cat being attacked when used for aggression and may cause increase in this cat's aggressive tendencies 
butorphanol  Torbutrol; 1, 5 and 10mg tablets  1) coughing 2) pain relief  1) 0.55mg/kg every 6 to 8 hrs 2) 1.5mg/kg every 4 to 6 hours  only moderately effective for pain relief 
calcitriol  Rocaltrol  chronic renal failure  2.5 to 3ng/kg every 24 hrs note that this is nanograms/kg  dosage depends on calcium and phosphorous levels, usually must be formulated by compounding pharmacies, controversial effectiveness 
calcium carbonate  Tums, generics, available calcium varies  dietary requirements, phosphate binder  60 to 100mg/kg per day  
calcium lactate  generics  dietary requirements  0.2 to 0.5gm/cat/day  usually given in divided doses with meals 
captopril  Capoten; 25mg tablet  3.12 to 6.25mg/cat every 8 hours  
carbenicillin  Geocillin; 500mg tablet  antibiotic  10mg/kg every 8 hours  
carimazole  Neomercazole  hyperthyroidism  5mg/cat every 8 hrs first week, then every 12 hrs  not available in the United States, available in Europe 
carprofen  Rimadyl  The formulations available in the US should not be used in cats  
cascara segrada  Nature's Remedy; 100mg tablets  constipation  1 to 2mg/kg/cat/day  
castor oil  generics, 100% solution  4 to 10ml/day  
cefaclor  Ceclor; 25mg/ml oral suspension  antibiotic  4 to 20mg/kg every 8 hrs  
cefadroxil  CefaTabs; 50mg, 100mg; CefaDrops 50mg/ml  antibiotic  22mg/kg every 12 to 24 hours  
cefixime  Suprax  1) general antibiotic 2) urinary tract infections  1) 10mg/kg every 12 hrs 2) 5mg/kg every 12 to 24 hours  
cephalexin  Keflex, generic  antibiotic  10 to 15mg/lb every 12 hours  
chlorambucil  Leukeran; 2mg tablet  0.1 to 0.2mg/kg every 48hrs  may start with every 24hr usage  
chloramphenicol  generics; 30mg/ml oral suspension, 250mg capsules  antibiotic  12.5 to 25mg/kg every 12 hours  handle cautiously, minor exposure can be toxic to humans 
chlorothiazide  Diuril; 50mg/ml oral suspension  diuretic  2040mg/kg every 12 hours  
chlorpheniramine maleate  Chlortrimeton, generics; 4mg tablets  antihistamine  2mg/cat every 12 hours  
cimetidine  Tagamet; 100, 200, 300mg tablets  1)ulcers 2)gastrointestinal protectant  1)10mg/kg every 8 hrs 2) 2.5 to 5mg every 12 hours  
cisapride  Propulsid; 10mg tablet  megacolon, constipation  2.5 to 5mg/cat every 8 to 12 hours  available from compounding pharmacies 
clindamycin  Antirobe; 25mg capsules, 25mg/ml syrup  antibiotic, 1)commonly used for oral infections 2)anaerobic infections 3) toxoplasmosis  1) 5.5mg/kg every 12 hrs or 11mg/kg every 24 hours 2) 11mg/kg every 12hrs or 22mg/kg every 24 hrs 3) 12.5mg/kg every 12 hours  
clofazimine  Lamprene; 50mg and 100mg capsules  1mg/kg every 24 hours but do not exceed 4mg per day  
clomipramine  Clomicalm (veterinary), Anafranil (human), 5, 10mg tablets  behavioral disorders  1 to 5mg per cat every 12 to 24 hours  
clonazepam  Klonopin, 0.5, 1 and 2mg tablets  0.5mg/kg every 8 to 12 hours  
clorazepate  Tranxene; 3.75, 7.5, 11.25 and 15mg tablets  2mg/kg every 12 hours  
cloxacillin  Cloxapen; 25mg/ml oral suspension  anitibiotic  20 to 40mg/kg every 8 hours  
codeine  generics, 15 mg tablets, 5mg/ml syrup, 3mg/ml solution  1)cough suppressant 2) pain relief  1) 0.1 to 0.3mg/kg every 4 to 6 hrs 2) 0.5 to 1mg/kg every 4 to 6 hours  narcotics may cause extreme excitement in some cats so must be used cautiously 
cholchicine  generic, 500ug and 600ug tablets (0.5, 0.6mg)  0.1 to 0.3mg/kg every 24 hours  not used very often in cats  
cyclophos phamide  Cytoxan; 25 and 50mg tablets  6.25 to 12.5mg/cat once daily for 4 days, then 3 days off  
cyclosporine (oral)  Sandimmune; 100mg/ml oral solution, 25mg capsules  4 to 6mg/kg every 12 hours  
cyclosporine ophthalmic  Optimmune 0.2% compounded drops of 1% or 2% in olive or corn oil  ointment: apply a 1/4th inch strip every 12 hours drops: 1 drop every 12 hours  
cyproheptadine  Periactin; 4mg tablet, 2mg/5ml syrup  1) appetite stimulant 2) asthma  1) 2mg per cat every 24 hours 2) 1.1mg/kg every 8 to 12 hours  
dantrolene  Dantrium; 100mg capsule  0.5 to 2mg/kg every 12 hours  
dexamethasone  Azium and generics; injection 2mg/ml, 4mg/ml, tablets 0.25mg, 0.5mg, 0.75mg, 1mg, 1.5mg, 2mg, 4mg and 6mg  1) inflammation 2) shock 3) spinal injury 4) dexamethasone suppression testing  1) 0.1mg/kg every 24 to 72 hrs 2 and 3) 2.2 to 4.4mg/kg IV 4) 0.1mg/kg IV, take samples pre and 4 and 8hrs post injection  
dextrometh orphan  many forms  cough suppression  0.5 to 2mg/kg every 6 to 8 hours  most OTC forms make cats salivate profusely 
diazepam  Valium; 5mg/ml injection, 2mg, 5mg tablets  1) seizures 2) inappropriate urination 3) appetite stimulant  1) 0.5mg/kg IV or rectally 2) 2mg/cat every 12 hours 3) 0.2mg/kg IV (less often works)  diazepam can cause sudden severe liver failure in cat in rare cases so it should be used cautiously 
dichlorphen amide  Daranide; 50mg tablet  3 to 5mg/kg every 8 to 12 hours  
dichlorvos  Task; 10mg and 25mg tablets  deworming (hook, round, whip worms)  11mg/kg  organophosphate 
diethylstilbestrol (DES)  only available through compounding pharmacies  urinary incontinence  0.05 to 0.1mg/cat every 24 hours or longer based on effect  
difloxacin  Dicural; 11.4, 45.4 and 136mg tablets  antibiotic (fluoroquinolone class)  5 to 10mg/kg once a day  
digoxin  Lanoxin, Cardoxin; 0.0625, 0.125, 0.25mg tablets, 0.05 and 0.15mg/ml elixir  0.08 to 0.01mg/kg every 48hrs  
diltiazem  Cardizem; 30mg tablets  
dimhenhydrinate  Dramamine; 50mg tablets  12.5mg/cat every 8 hours (1/4th tablet)  
diphenoxylate  Lomotil; 2.5mg tablets  to control diarrhea  .0.5 to 0.1mg/kg every 12 hours  
ducosate (dioctylsodium suflosuccinate, DSS)  many OTC brands  stool softener  50mg/cat every 12 to 24 hours  do not use at the same time as any mineral oil or petrolatum based product 
doxycycline  generics; 50mg capsules, 100mg capsules or tablets; 10mg/ml oral suspension  antibiotic  3 to 5mg/kg every 12 hours or 10mg/kg every 24 hours  Give at least 6cc of water immediately after administering capsules or tablets 
enalapril  Enacard, Vasotec; 2.5mg, 5mg, 10mg tablets  hypertension  0.25 to 0.5mg/kg every 12 to 24 hours  most commonly used once daily 
enrofloxaxin  Baytril; 5.7mg, 22.7mg tablets  antibiotic  5 to 20mg/kg/day  may cause blindness when given at higher dosages, 5mg/kg every 12 hours not likely to cause this 
Epsiprantel  Cestex; 12.5mg, 25mg tablets  kills tapeworms  12.5mg once for cats <9 lbs, 25mg once for cats 9+ lbs.  can use 2.75mg/kg dosing if necessary 
erythromycin  generics; 250mg tablet  antibiotic  10 to 20mg/kg every 8 to 12 hrs  may cause vomiting 
etretinate  Tegison; 10 and 25mg capsules  2mg/kg/day  
famotidine  Pepcid AC; 10mg tablet  GI protectant  0.5mg/kg every 12 to 24 hours  usually used once daily in cats 
fenbendazole  Pancur Granules 22.7:; 100mg/ml liquid  dewormer  50mg/kg/day for 3 days  
fentanyl transdermal patch  Duragesic; 25ug size  pain relief  Apply 1 patch every 5 days  good pain reliever for post surgical pain 
ferrous sulfate  OTC  iron supplement  50 to 100mg/cat every 24 hours  
florfenical  Nuflor injectable; 300mg/ml  antibiotic  22mg/kg every 12 hours of the injectable liquid given orally  
fluconazole  Diflucan; 50mg, 100mg tablets  antifungal  50mg/cat every 12 to 24 hours  usually given once daily 
flucytosine  Ancobon; 75mg/ml oral suspension  25 to 50mg/kg every 6 to 8 hours  
fludrocortisone  Flurinef; 0.1mg tablets  hypoadrenocorticism  0.1 to 0.2mg/cat every 24 hours  
fluoroscein dye  use the strips for eye staining, put 3 to 6 strips in a capsule  to differentiate which cat is urinating inappropriately in a group  give 1 capsule of strips and watch for green urine or fluorescent urine with a black light  
fluoxetine  Prozac; 10mg and 20mg capsules, 4mg/ml oral solution  behavioral disorders  1mg/kg every 24 hours, usually no more than 5mg/cat/day  
furosemide  Salix; 12.5mg, 50mg tablets  diuretic  1 to 4mg/kg up to three times a day  water intake must not be restricted when using diuretics 
gemfibrozil  Lopid; 300mg capsules  7.5mg/kg every 12 hours  
glipizide  Glucotrol; 5mg and 10mg tablets  diabetes mellitus  2.5 to 7.5mg/cat every 12 hours  usually start with 2.5m/cat, average dose 5mg/cat 
glucosamine chondroitin  Cosequin, many OTC brands; 500mg/400mg tablets  arthritis  1/2 to 1 tablet per day  
glyburide  Glynase, others; 1.25mg, 2.5mg and 5mg tablets  0.2mg/kg every 24 hours  
glycerin  generic oral solutions  1 to 2mg/kg every 8 hours  
griseofulvin, microsize  Fulvicin U/F; 125mg, 250mg, 500mg tablets, 25mg/ml oral suspension and 125mg/ml oral syrup  ringworm  50mg/kg every 24 hours  
griseofulvin, ultramicrosize  Fulvicin P/G; GrisPEG; 100mg, 125mg, 165mg, 250mg, 330mg tablets  ringworm  15mg/kg every 12 hours (30mg/kg/day)  
hydralazine  Apresoline; 10mg tablet  2.5mg/cat every 12 to 24 hours  
hydrochlor thiazide  HydroDiuril; 25mg, 50mg tablets, 10 and 100mg/ml oral solution  diuretic  2 to 4mg/kg every 12 hours  
hydrocortisone  Cortef; 5mg, 10mg and 20mg tablets  1)corticosteroid replacement therapy 2) anti inflammatory  1) 1 to 2mg/kg every 12 hours 2) 2.5 to 5mg/kg every 12 hours  
hydroxyurea  Hydrea; 500mg capsules  25mg/kg once a day for 3 days of each week  
imipramine  Tofranil; 10mg, 25mg, 50mg tablets  2 to 4mg/kg every 12 to 24 hours  
interferon alpha  Roferon; 3 million unit vial for injection  immune modulator  15 to 30U per cat once a day, usually used 7 days on/7off  the injectable solution is diluted and given orally 
ipecac syrup  to induce vomiting  2 to 6ml (about 1/4th to 1 teaspoonful)  
isotretinoin  Accutane; 10, 20 and 40mg tablets  1 to 3mg/kg every 24 hours  
itraconazole  Sporanox; 100mg capsules  fungal infections  1.5 to 5.0mg/kg every 24 hours  usually the capsules are opened and the contents mixed with butter, then divided equally into appropriate dosages 
ivermectin  Ivomec, Eqvalan; 10mg/ml solution (oral or injectable)  mange  0.2 to 0.3mg/kg, once or twice for ear mites or cheyletiella mites, may need to be used for extended periods for demodectic mange  
kaopectate  Kaopectate  1 to 2ml/kg every 2 to 6 hours  
ketoconazole  Nizoral; 200mg tablet, 100mg/ml oral suspension  fungal infections  5 to 10mg/kg every 8 to 12 hours  
ketoprofen  OrudisKT (OTC); 12.5mg tablet  nonsteroidal antiinflamma tory medication  1mg/kg every 24 hours for no more than 5 days  
lactulose  Chronulac, Enulose; 10gm/15ml  1)megacolon, constipation 2) hepatic encephalopathy  1) 1 to 5ml every 8 to 12 hours as necessary to keep stools soft 2) 2.5 to 5ml/cat every 8 hours  
leucovorin  Wellovorin; 5mg, 10mg, 15mg and 25mg tablets, 3 and 5mg/ml solutions  antidote for pyrimethamine (Daraprim Rx) poisoning  1mg/kg every 24 hours  
levamisole  Levasole, Tamisol; 11.7gm/13gm packet  1) immune stimulant 2) lungworms  1) 0.5 to 2mg/kg usually every 48 to 72 hours 2) 20 to 40mg/kg every 24 hours for 5 days  
levodopa  Larodopa; 100mg tablets  hepatic encephalopathy  6.8mg/kg first dose, then 1.4mg/kg every 6 hours  
levothyroxine  Soloxine, ThyroTabs; 0.1mg, 0.2mg tablets  hypothyroidism (usually post therapy for hyperthyroidism)  usually 0.1mg to 0.2mg/cat per day will work but adjust dosage by testing blood levels  
lincomycin  Lincocin; 100mg, 200mg tablets  antibiotic  15 to 25mg/kg every 12 hours  
liothyronine (T3)  Cytomel; 60ug tablet  T3 suppression testing for hyperthyroidism  after drawing pretest blood sample administer 7 doses of approximately 4.4ug/kg every 8 hours then draw blood for post test sample  
loperamide  Immodium AD; 2mg tablet, 0.2mg/ml liquid  control diarrhea  0.08 to 0.16mg/kg every 12 hours  most cats hate the liquid and will foam at the mouth for some time after administration 
lufenuron  Program; 135mg and 270mg suspension packets, may use equivalent tablets  1) flea control 2) ringworm  1) 30mg/kg on the same day each month 2) 80 to 100mg/kg two days in a row, then monthly until cultures are negative  
magnesium citrate  Citroma, CitroMag  2 to 4ml/kg  
magnesium hydroxide  Milk of Magnesia  cathartic  2 to 6ml/cat  
magnesium sulfate  Epsom salts  2 to 6gm/cat  
MCT oil  OTCs  1 to 2ml/kg/day in food  
mebendazole  Telmintic  dewormer (hooks, rounds, whips)  22mg/kg with food once a day for 3 days  
meclizine  Antivert; 12.5, 25 and 50mg tablets  motion sickness  12.5mg once a day  
megestrol acetate  Ovaban, Megace; 5mg and 20mg tablets  some dermatologic conditions, urine marking that won't respond to other medications  2.5 to 5mg/cat every 24 hours for one week then increase time between doses to longest effective interval  can induce diabetes and mammary tumors, so use as last resort 
Metamucil  (psyllium preparations)  fiber source  1/4th teaspoon once or twice a day mixed with food is most common recommended dosage  
metaproterenol  Alupent, Metaprel; 10 and 20mg tablets, 5mg/ml syrup, inhalers  0.325 to 0.65mg/kg every 4 to 6 hours  
methazolamide  Neptazane; 25 and 50mg tablets  2 to 6mg/kg every 8 to 12 hours  
methanamine hippurate  Hipres, Urex; 1 gram tablets  250mg/cat every 12 hours  
methanimine mandelate  Mandelamine; 1 gram tablet, 50 and 100mg/ml suspension  10 to 20mg/kg every 8 to 12 hours  
methionine (d,l methionine)  Uroeze, MethioForm; several forms  1 to 1.5 grams/cat mixed in food per day  
methimazole  Tapazole; 5mg and 10mg tablets, compounded to liquids and transdermal prepartions  hyperthyroidism  2.5 to 15mg/cat every 12 to 24 hours (usually no more than 15mg/day), adjust dosage by evaluation of T4 levels  transdermal preparations usually require lower dosing 
methocarbamol  RoaxinV; 500 and 750mg tablets  antidote for permethrin poisoning  22 to 44mg/kg every 8 hours as necessary to control tremoring  Permethrin is in many OTC spot on flea control products made for dogs 
methylpred nisolone  Medrol; 1mg, 2mg, 4mg tablets  corticosteroid  0.22 to 0.44mg/kg every 12 to 24 hours, use on alternate days for longer term use  
methyltestos terone  Android, generics; 10 and 25mg tablets  2.5 to 5mg/cat every 24 to 48 hours  
metoclopramide  Reglan; 5mg, 10mg tablets, 1mg/ml oral solution  to control vomiting  0.2 to 0.5mg/kg every 6 to 8 hours  
metoprolol tartrate  Lopressor; 50 and 100mg tablets  2 to 15mg/cat every 8 hours  
metronidazole  Flagyl, generics; 250mg and 500mg tablets, 50mg/ml suspension  1) anaerobic infections 2) giardia infection 3) inflammatory bowel disease  1) 10 to 25mg/kg every 24 hours 2) 17mg/kg every 24 hours for 8 days 3) 5 to 15mg/kg every 24 hours  long term use associated with cancer in laboratory animals 
milbemycin oxime  Interceptor; 2.3 and 5.75mg tablets  heartworm prevention (approved)  0.5mg/kg on the same day each month  
mineral oil  OTC  10 to 25ml/cat every 24 hours  mineral oil can be inhaled and causes inhalation pneumonia, so its use is questionable  
minocycline  Minocin; 50 and 100mg tablets, 10mg/ml suspension  antibiotic  5 to 12.5mg/kg every 12 hours  
naltrexone  Trexan; 50mg tablet  behavioral disorders  2.2mg/kg every 12 hours  
neomycin  Biosol; 200mg/ml oral suspension  hepatic encephalopathy  10 to 20mg/kg every 6 to 12 hours  
nitroglycerin ointment  Nitrol, generics; 2% ointment  2 to 4mg topically (around 1/4th inch strip) every 12 hours  
orbifloxacin  Orbax; 5.7, 22.7mg tablets  antibiotic, fluoroquinolone  2.5 to 7.5mg/kg every 24 hours  
oxacillin  generics; 250mg capsules, 50mg/ml oral solution  antibiotic  22 to 44mg/kg every 8 hours  
oxazepam  Serax; 15mg tablets  appetite stimulant  2.5mg/cat  once daily use is probably best, if possible 
oxytetracycline  generic; 250mg tablets  antibiotic  20 to 25mg/kg every 12 hours  
paroxetine  Paxil; 10mg tablets  behavioral disorders  1/8 to 1/4th 10mg tablet once a day  
dpenicillamine  Cuprimine; 125mg capsules  heavy metal poisoning antidote  10 to 15mg/kg  use in cats is somewhat controversial 
penicillin V  PenVee; 250mg and 500mg tablets  antibiotic  10mg/kg every 8 hours  rarely used 
pentoxifylline  Trental; 400mg tablets  1/4th of a 400mg tablet every 8 to 12 hours  
phenobarbital  generics; 15mg, 30mg, 60mg, 100mg tablets; 4mg/ml oral elixir  seizure control  2 to 4mg/kg every 12 hours initially, adjust dosage by testing serum levels  
phenoxybenz amine  Dibenzyline; 10mg capsule  2.5mg/cat every 8 to 12 hours  
piperazine  OTCs, solutions usually 170 or 340mg/ml for pets  kills roundworms  44 to 66mg/kg  repeat dosage at 2 week intervals 
piroxicam  Feldene; 10mg capsules  pain relief, cancer therapy  0.3mg/kg every 48 hours  
potassium bromide  only available through compounding pharmacies  seizure control  30 to 50mg/kg every 24 hours, loading dose usually used when given alone, monitor serum levels to establish long term dosage  
potassium citrate  
potassium gluconate  TumilK, Renacare; 2mEq tablets, 2mEq/ 1/4th tsp powder and 2mEq/1/2 teaspoon gel  potassium supplement  2 mEq per 10 lbs every 12 hours  
potassium iodide  30 to 100mg/cat per day for 10 days  
praziquantel  Droncit; 23 and 34 mg tablets 
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