药物信息为PROMETHAZINE VC SYRUP (PROMETHAZINE HYDROCHLORIDE, USP AND PHENYLEPHRINE HYDROCHLORIDE, USP) (Qualitest Pharmaceuticals): DESCRIPTION

Each 5 mL (one teaspoonful), for oral administration contains: Promethazine hydrochloride 6.25 mg; phenylephrine hydrochloride 5 mg. Alcohol 7%.

Inactive Ingredients: Apricot peach flavor, ascorbic acid, citric acid, FD&C yellow #6, menthol, methylparaben, propylene glycol, propylparaben, purified water, saccharin sodium, sodium benzoate, sodium citrate and sucrose.

Promethazine hydrochloride, a phenothiazine derivative, is chemically designated as (±)-10-[2-(Dimethylamino) propyl] phenothiazine monohydrochloride.

Promethazine hydrochloride occurs as a white to faint yellow, practically odorless, crystalline powder which slowly oxidizes and turns blue on prolonged exposure to air. It is soluble in water and freely soluble in alcohol. It has a molecular weight of 320.88, a molecular formula of C₁₇H₂₀N₂S•HCI, and the following structural formula:

Phenylephrine hydrochloride is a sympathomimetic amine salt which is chemically designated as (-)-m-Hydroxy-α-[(methylamino) methyl] benzyl alcohol hydrochloride. It occurs as white or nearly white crystals, having a bitter taste. It is freely soluble in water and alcohol. Phenylephrine hydrochloride is subject to oxidation and must be protected from light and air. It has a molecular weight of 203.67, a molecular formula of C₉H₁₃NO₂•HCI, and the following structural formula: