Medically reviewed by Daniel Combs, MD 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.

One reason that Benadryl works when it does is that it causes mild sedation, so an allergic dog might just sleep. The reason that some people are nervous about using it, however, is that their dog ...

Why Do You Need Benadryl for Dogs? Dogs are curious and energetic, so it’s inevitable that some of them will wind up in some sticky situations. From running through some poison ivy to getting ...