Diphenhydramine Hydrochloride (HCl)
Definition:
Diphenhydramine Hydrochloride (HCl) is a first-generation antihistamine commonly used to treat allergies, motion sickness, and insomnia. It is a white, crystalline powder soluble in water.

Functions:

· Antihistaminic: Blocks the action of histamine, reducing allergy symptoms like sneezing, itching, and runny nose.

· Sedative: Produces drowsiness, making it effective as a sleep aid.

· Anti-emetic: Prevents nausea and vomiting associated with motion sickness.

Applications:

· Pharmaceuticals: Used in over-the-counter products for allergy relief, cold medications, and sleep aids.

· Cosmetics & Skincare: Incorporated in creams or lotions for its anti-inflammatory and soothing properties.

· Veterinary Medicine: Applied for managing allergic reactions in animals and treating travel-related nausea.