מדינה: ארצות הברית
שפה: אנגלית
מקור: NLM (National Library of Medicine)
HYDROQUINONE (UNII: XV74C1N1AE) (HYDROQUINONE - UNII:XV74C1N1AE)
Perrigo New York Inc
HYDROQUINONE
HYDROQUINONE 40 mg in 1 g
PRESCRIPTION DRUG
unapproved drug other
HYDROQUINONE TIME RELEASE- HYDROQUINONE CREAM PERRIGO NEW YORK INC _Disclaimer: This drug has not been found by FDA to be safe and effective, and this labeling has not been_ _approved by FDA. For further information about unapproved drugs, click here._ ---------- HYDROQUINONE USP, 4% TIME RELEASE CREAM SKIN LIGHTENING MOISTURIZING CREAM RX ONLY FOR EXTERNAL USE ONLY NOT FOR OPHTHALMIC USE DESCRIPTION Each gram of Hydroquinone USP, 4% Time Release Cream contains 40 mg hydroquinone USP and retinyl palmitate (vitamin A) incorporated into microspheres composed of acrylates/C10-30 alkyl acrylate crosspolymer. This polymeric system provides gradual release of active ingredient into the skin. Other ingredients include ascorbic acid (vitamin C), ascorbyl palmitate, ascorbyl tetraisopalmitate, benzyl alcohol, bisabolol, butylated hydroxytoluene, cetyl alcohol, cyclopentasiloxane, edetate disodium, ethylhexyl palmitate, glycerin, glyceryl monostearate, light mineral oil, phenoxyethanol, poloxamer 188, polyoxyl 40 stearate, propyl gallate, purified water, _Simmondsia chinensis _(Jojoba) seed oil, sodium metabisulfite, sorbitan tristearate, tocopheryl acetate (vitamin E), tricontanyl PVP, and trolamine. Chemically, hydroquinone is C H O and has a molecular weight of 110.11. The chemical name is 1,4 dihydroxybenzene, and the structural formula of hydroquinone is: CLINICAL PHARMACOLOGY Topical application of hydroquinone produces a reversible depigmentation of the skin by inhibition of the enzymatic oxidation of tyrosine to 3,4-dihydroxyphenylalanine (dopa) (Denton, C. et al., 1952) and suppression of other melanocyte metabolic processes (Jimbow, K. et al., 1974) . Exposure to sunlight or ultraviolet light will cause repigmentation of the bleached areas (Parrish, J.A. et al., 1978) . INDICATIONS AND USAGE Hydroquinone USP, 4% Time Release Cream is indicated for the gradual treatment of ultraviolet induced dyschromia and discoloration (such as chloasma, melasma, freckles, and senile lentigines) resulting from the use of oral co קרא את המסמך השלם