Meclizine

Common card · No. 224658

Meclizine, sold under the brand name Bonine, among others, is an antihistamine used to treat motion sickness and dizziness (vertigo). It is taken by mouth. Effects generally begin in an hour and last for up to a day. Common side effects include sleepiness and dry mouth. Serious side effects may include allergic reactions. Use in pregnancy appears safe, but has not been well studied; use in breastfeeding is of unclear safety. It is believed to work in part by anticholinergic and antihistamine mechanisms. Meclizine was patented in 1951 and came into medical use in 1953. It is available as a generic medication and often over the counter. In 2023, it was the 137th most commonly prescribed medication in the United States, with more than 4 million prescriptions.

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