DIPHENHYDRAMINE treats the symptoms of
allergies and
allergic reactions. It may also be used to prevent and treat
motion sickness or the symptoms of
Parkinson disease. It works by blocking histamine, a substance released by the body during an
allergic reaction. It belongs to a group of medications called
antihistamines. Get Children's Diphenhydramine for as low as $2.27, which is 64% off the average retail price of $6.22 for the most common version, by using a GoodRx coupon.