Is Benadryl (diphenhydramine) Toxic to Pets?
Yes — benadryl (diphenhydramine) is mildly toxic to cats. Yes — benadryl (diphenhydramine) is mildly toxic to dogs.
PawSafe Check is for general information only and is not veterinary advice. Always contact your veterinarian or a poison control service if you think your pet has been exposed.
- Toxic compound
- Diphenhydramine
- Toxic parts
- Tablets, liquids, combo products
- Also known as
- benadryl
Symptoms
Cats (mildly toxic)
- Sedation or agitation
- Dry mouth
- Fast heart rate
- Vomiting
Dogs (mildly toxic)
- Sedation or agitation
- Dry mouth
- Fast heart rate
- Vomiting
What to do
If your cat ate benadryl (diphenhydramine)
- Remove any plant material from your cat's mouth and keep it out of reach.
- Gently rinse the mouth and offer fresh water.
- Call your vet if symptoms persist, get worse, or your cat is small, young or elderly.
If your dog ate benadryl (diphenhydramine)
- Remove any plant material from your dog's mouth and keep it out of reach.
- Gently rinse the mouth and offer fresh water.
- Call your vet if symptoms persist, get worse, or your dog is small, young or elderly.
Good to know
Vets sometimes recommend diphenhydramine at specific doses, but overdoses cause agitation or sedation and a fast heart rate. Some products also contain decongestants, which are dangerous.
Is your pet covered for emergency vet bills?
Compare pet insurance quotes →
Frequently asked questions
Is benadryl (diphenhydramine) toxic to cats?
Yes — benadryl (diphenhydramine) is mildly toxic to cats. Common signs include sedation or agitation, dry mouth, fast heart rate.
Is benadryl (diphenhydramine) toxic to dogs?
Yes — benadryl (diphenhydramine) is mildly toxic to dogs. Common signs include sedation or agitation, dry mouth, fast heart rate.
Which parts of benadryl (diphenhydramine) are toxic?
Tablets, liquids, combo products.
What makes benadryl (diphenhydramine) toxic?
Diphenhydramine.
Related guides
Related items
- Birth control pillsCats: Mildly toxicDogs: Mildly toxic
- CandlesCats: Mildly toxicDogs: Mildly toxic
- Candy wrappersCats: Mildly toxicDogs: Mildly toxic
- Christmas tree waterCats: Mildly toxicDogs: Mildly toxic
- Diaper rash creamCats: Mildly toxicDogs: Mildly toxic
- Dish soapCats: Mildly toxicDogs: Mildly toxic
Free printable: 25 pet-safe houseplants + emergency numbers
We only use your email to send the list and occasional pet-safety tips. Unsubscribe anytime. Privacy policy