Drugs to Avoid in Pregnant or Nursing Dogs

 

 

   
With a few exceptions as noted below, one should avoid using all medications in pregnant and lactating (nursing) dogs. There may be instances in which a medication not recommended for use during pregnancy may need to be used to save the life of the bitch, even though it may potentially harm the fetuses.

NOTE: According to the Merck Veterinary Manual, this is only a partial listing of drugs that should be avoided in pregnant or nursing dogs. A listing of all such drugs is beyond the scope of this article. If you have concerns regarding a specific drug, make sure you do an internet search for that particular drug or purchase a copy of the Merck Vet Manual to have on-hand.
 

Drug May Be Used Do Not Use Safety Studies in Dogs Not Available; Consult Your Veterinarian
Acemannan   x  
Acepromazine   x  
Acetylcysteine Use as an antidote, only.    
Activated Charcoal x    
Albuterol   x  
Allopurinol   x  
Amikacin   x  
Aminopenicillins (Amoxicillin, Ampicillin)     x
Aminopentamide (Centrine)     x
Amitraz (Mitaban, Preventic Collars, Paramite, Prolate)   x  
Amitriptyline (Elavil)   x  
Antacids (Maalox, Milk of Magnesia)   x  
Artificial Tears x    
Aspirin   x  
Atropine Eye Medication x    
Azathioprine (Imuran)   x  
Bismuth Subsalicylate (Pepto Bismol)   x  
Buspirone (Buspar)   x  
Butorphanol (Torbutrol, Torbugesic)   x  
Carprofen (Rimadyl)   x  
Cephalosporins (Keflex, Cefa-drops)     x
Chlorpheniramine (Chlor-Trimeton)   x  
Cimetidine (Tagamet)   x  
Cisapride (Propulsid)   x  
Clemastine (Tavist 1)   x  
Clindamycin (Antirobe)     Use with caution.
Clomipramine (Clomicalm, Anafranil)   x  
Cyclosporin (Optimmune)     x
Cyproheptadine   x  
Dextromethorphan   x  
Diazepam (Valium)   x  
Digoxin (Cardoxin)     Give only if clearly needed.
Dimenhydrinate (Dramamine)   x  
Diphenhydramine (Benadryl)   x  
DMSO (Synotic)   x  
DOCP   x  
Enalapril (Enacard, Vasotec)   x  
Enrofloxacin (Baytril)   x  
Epsiprantel (Cestex)   x  
Erythromycin   x  
Erythropoietin (EPO, Epogen)   x  
Estrogens (ECP, DES)   x  
Etodolac (EtoGesic)   x  
Extended Spectrum Penicillins (Carbenicillin)   x  
Famotidine (Pepcid)   x  
Fatty acids     Not recommended for pregnant humans.
Fenbendazole (Safe-Guard, Panacur) x    
Fentanyl   x  
Fipronil (Frontline)
  Frontline Plus
  Frontline Top Spot
  Frontline Spray
x
x
 
 
 
x
 
Fludrocortisone (Florinef)   x  
Fluoxetine (Prozac)   x  
Furosemide (Lasix)   x  
Gentamicin (Gentocin)   x  
Glucocorticosteroids (Prednisone, Dexamethasone, Hydrocortisone)   x  
Glycosaminoglycans (Glucosamine, Chondroitin)     x
Griseofulvin (Fulvicin)   x  
Hydroxyzine (Atarax)   x  
Imidacloprid (Advantage)   x  
Insulin x   Note: Diabetic dogs should not be bred.
Itraconazole (Sporanox)   x  
Ivermectin (Heartgard) x    
Kanamycin (Amforal, Kantrim)   x  
Kaolin (Kaopectate, Canine Pectate)
**See Note Below
x    
Loperamide (Immodium)   x  
Lufenuron (Program) x    
Mannitol   x  
Marbofloxacin (Zeniquin)   x  
Mebendazole (Telmintic)   x  
Meclofenamic Acid (Arquel)   x  
Melarsomine (Immiticide)   x  
Methimazole (Tapazole)   x  
Methionine (Methigel, Methio-Form)   x  
Metoclopramide (Reglan)     x
Metronidazole (Flagyl)   x  
Mibolerone (Cheque Drops)   x  
Milbemycin (Interceptor, Sentinel) x    
Misoprostol (Cytotec)   x  
Mitotane (o,p-DDD, Lysodren)   x  
Natural Penicillins (Penicillin G, Crystiben, Penicillin V)   x  
Neomycin   x  
Novobiocin (Albaplex)   x  
Omeprazole (Prilosec)   x  
Orbifloxacin (Orbax)   x  
Oxytocin (Pitocin) At delivery.    
Pancreatic Enzymes (Pancrezyme, Viokase-K) x    
Penicillinase Resistant Penicillins (Cloxacillin)   x  
Pentobarbital   x  
Permethrin (Bio Spot-Spot On for Dogs, K9 Advantix)     x
Phenobarbital   x  
Phenylbutazone   x  
Phenylpropanolamine (Dexatrim)   x  
Phenytoin (Dilantin)   x  
Phytonadione (Vitamin K)   x  
Piperazine (Happy Jack Kennel Wormer, Purina Liquid Wormer, Sergeants Worm Away, Pipa Tabs, Piper Worm Wormer) Other wormers are preferred.    
Polysulfated Glycosaminoglycan (Adequan)   x  
Potassium Depends on type & reason for use.    
Potassium Bromide   x  
Potentiated Penicillins (Clavamox, Augmentin)   x  
Praziquantel (Droncit, Drontal, Tradewinds Tapeworm Tabs)   x  
Primidone   x  
Progestins (Megestrol acetate, Ovaban)   x  
Psyllium (Metamucil, Vetasyl) x    
Pyrantel Pamoate (ProWormer-2, Nemex) Do not use wormers with additional ingredients.    
Ranitidine (Zantac)   x  
Rotenone (Goodwinol Ointment) x   Caution: Do not use on puppies, or expose puppies to this medication.
Selamectin (Revolution) x    
Selegiline (Anipryl)   x  
Sucralfate     x
Sulfadimethoxine (Albon, Bactrovet)   x  
Sulfadimethoxine & Ormetroprim (Primor)   x  
Terbutaline   x  
Tetracyclines (Doxycycline, Oxytetracycline)   x  
Theophylline (Theo-Dur)   x  
Thiacetarsamide (Caparsolate)     Use with caution.
Thyroxine (Synthroid, Soloxine) x   Note: Hypothyroid dogs should not be bred.
Trimeprazine (Temaril-P)   x  
Trimethoprim & Sulfadiazine (Tribrissen)   x  

**CAUTION: Some Kaopectate includes bismuth salicylate as an ingredient. Dogs that may have an allergy to aspirin, or are taking aspirin, steroids, or another non-steroidal anti-inflammatory drug (NSAID) such as Rimadyl, EtoGesic, or Deramaxx should not be given the formulation with bismuth salicylate unless directed by a veterinarian.

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