Diphenhydramine is an antihistamine mainly used to treat allergies
Diphenhydramine is an antihistamine used to relieve symptoms of allergy, hay fever, and the common cold.
These symptoms include rash, itching, watery eyes, itchy eyes/nose/throat, cough, runny nose, and sneezing.
It is also used to prevent and treat nausea, vomiting and dizziness caused by motion sickness.
Diphenhydramine can also be used to help you relax and fall asleep