Diphenhydramine Injections

Diphenhydramine injections are used primarily to quickly alleviate symptoms associated with severe allergic reactions, including anaphylaxis. This medication is an antihistamine, which works by blocking the action of histamines—a chemical in the body that triggers allergy symptoms. Diphenhydramine injections are also utilized to relieve symptoms of allergic rhinitis, hay fever, itching, and hives. Additionally, they may be used as a sedative for patients in some medical situations and to treat motion sickness or nausea. Diphenhydramine is often administered in healthcare settings for rapid effect, particularly when oral administration is not feasible.