Benadryl (diphenhydramine) is an over-the-counter (OTC) antihistamine commonly used to treat allergies that is also sometimes used as a sleep aid for insomnia. Benadryl is only intended for the ...

Benadryl - also known by its generic name diphenhydramine - is an over-the-counter antihistamine commonly used to relieve symptoms of allergies, hay fever, and the common cold in humans.

Benadryl is an antihistamine that helps relieve the symptoms of allergies in both humans and animals. It can also be used to relieve the symptoms of motion sickness if a dog needs to be ...