بريدوكايين كريم 30 جم

DESCRIPTION Lidocaine and prilocaine cream USP, 2.5%/2.5% is an emulsion in which the oil phase is a eutectic mixture of lidocaine and prilocaine in a ratio of 1:1 by weight. This eutectic mixture has a melting point below room temperature and therefore both local anesthetics exist as a liquid oil rather than as crystals. It is packaged in 5 gram and 30 gram tubes. Lidocaine is chemically designated as acetamide, 2-(diethylamino)-N-(2,6-dimethylphenyl), has an octanol: water partition ratio of 43 at pH 7.4, and has the following structure: C 14 H 22 N 2 O M.W. 234.3 Prilocaine is chemically designated as propanamide, N-(2-methylphenyl)-2-(propylamino), has an octanol: water partition ratio of 25 at pH 7.4, and has the following structure: C 13 H 20 N 2 O M.W. 220.3 Each gram of lidocaine and prilocaine cream contains lidocaine 25 mg, prilocaine 25 mg, purified water, PEG-60/hydrogenated castor oil, carbopol 5984 and sodium hydroxide to adjust pH to approximately 9. Lidocaine and prilocaine cream contains no preservative, however it passes the USP antimicrobial effectiveness test due to the pH. The specific gravity of lidocaine and prilocaine cream is 1.00. The therapeutic class is topical anesthetic agent. a3873b70-figure-01 a3873b70-figure-02