Diphenhydramine (for pain management)

Diphenhydramine is an antihistamine primarily used to treat allergic reactions, hay fever, and sleep issues. It works by blocking histamines, which are chemicals involved in allergy symptoms. While it is not mainly used for pain management, sometimes it helps with discomfort associated with allergic reactions or to alleviate symptoms that cause discomfort. It can cause drowsiness, so it's important to use it as directed. If you're seeking pain relief, other medications like acetaminophen or NSAIDs are typically more appropriate. Always consult a healthcare provider before using diphenhydramine for any purpose.