Hydroxyzine active ingredients?

The active ingredient in hydroxyzine is hydroxyzine hydrochloride [1][2]. Hydroxyzine is an antihistamine and antiemetic medication [1].

What else is hydroxyzine used for?

Hydroxyzine is used to treat symptoms of allergies such as hives and itching. It can also be used to treat anxiety and nausea or vomiting [1][3].

How does hydroxyzine work?

Hydroxyzine works by blocking the action of histamine, a substance in the body that causes allergic symptoms. It also affects the central nervous system, which can help to reduce anxiety and induce drowsiness [1].

When does the patent for hydroxyzine expire?

Information regarding specific patent expiry dates for hydroxyzine is available through resources like DrugPatentWatch.com [4].

Who manufactures hydroxyzine?

Multiple pharmaceutical companies manufacture generic versions of hydroxyzine [5].