Benadryl (diphenhydramine) is a brand-name drug used for allergies, allergic reactions, and itching. Benadryl comes in several forms that are available over the counter. The dosage can vary depending ...

The FDA says consumers who mistakenly swallow Benadryl Extra Strength Itch Stopping Gel, an over-the-counter product for use on the skin, could suffer serious side effects. Swallowing the gel can ...