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Description & Usage

Benadryl (Diphenhydramine) is an antihistamine which helps treat allergy-related symptoms such as itching triggered by insect stings or bites. It can also be used as a sedative for motion sickness or travel anxiety.  

Precautions & Side Effects

Potential side effects include drowsiness, dry mouth and urinary retention. Do not use if your pet is allergic to antihistamines, has glaucoma, prostate disease or high blood pressure.  Diphenhydramine should not be used in pregnant or nursing animals. 



Bendryl (Diphenhydramine) is available in 25mg and 50mg capsules. Do not mix, disolve or break open the slow release capsules. Administer orally every 8 to 12 hours. 


Store at room temperature (between 68° - 77°F) in a dry place and away from extreme heat and light. Keep away from children and pets.

What is Benadryl (diphenhydramine)?

Diphenhydramine (generic name) is more commonly known as Benadryl. It is a antihistamine used to treat allergy symptoms and itching from insect bites or stings. It is also commonly used to treat anxiety or motion sickness. 

Do I need a pescription to purchase Benadryl?

No, Benaryl (Diphenhydramine) capsules and mini tablets are available over the counter. Follow the instructions on the product and contact your veterinarian with any questions or concerns.

How does Benadryl work? 

Diphenhydramine blocks the effects of histamine in the body, thus eliminating symptoms such as itching, sneezing and swollen watery eyes. The drowsiness associated with the medicine can help relieve anxiety or motion sickness.