Diphenhydramine hydrochloride
Diphenhydramine hydrochloride is an antihistamine commonly used to relieve symptoms of allergies, such as sneezing, runny nose, and itching. It works by blocking the action of histamine, a substance in the body that causes allergic reactions. This medication is often found in over-the-counter products for allergy relief and cold symptoms.
In addition to its use for allergies, Diphenhydramine is also used as a sleep aid due to its sedative properties. It can help individuals who have difficulty falling asleep. However, it may cause drowsiness, so caution is advised when driving or operating machinery after taking it.