Generic name: Diphenhydramine
Benadryl is used to treat allergic symptoms, allergic reactions, Parkinson disease, motion sickness, and in case when oral treatment is impossible. It may also be used by your physician to treat certain other conditions.
It refers to anticholinergics and antihistamines. The medicine blocks the histamine action, thus, reducing allergy symptoms. It also makes the brain to decrease motion sickness and Parkinson disease symptoms.