Generic name: promethazine hydrochloride
Dosage form: tablet
Drug classes:Antihistamines, Phenothiazine antiemetics
Medically reviewed by Drugs.com. Last updated on Jul 22, 2021.
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DESCRIPTION
Each 12.5 mg promethazine hydrochloride tablet for oral administration contains 12.5 mg promethazine hydrochloride.
Each 25 mg promethazine hydrochloride tablet for oral administration contains 25 mg promethazine hydrochloride.
Each 50 mg promethazine hydrochloride tablet for oral administration contains 50 mg promethazine hydrochloride.
Each tablet contains the following inactive ingredients: lactose monohydrate, magnesium stearate, and methylcellulose.
In addition, 50 mg tablet contains FD&C Red #40 and 12.5 mg tablet contains FD&C Yellow #6.
Promethazine hydrochloride is a racemic compound; the empirical formula is C 17H 20N 2S•HCl and its molecular weight is 320.88.
Promethazine hydrochloride, a phenothiazine derivative, is designated chemically as 10 H-Phenothiazine-10-ethanamine, N,N,α-trimethyl-, monohydrochloride, (±)- with the following structural formula:
Promethazine hydrochloride occurs as a white to faint yellow, practically odorless, crystalline powder which slow...
