DailyMed Label: HYDROQUINONE 4%

DailyMed Label: Hydroquinone 4%

2024

DailyMed Prescription

Hydroquinone 4%

Hydroquinone

Nivagen Pharmaceuticals, Inc.

NDC: 75834-137

NDC: 75834-137

Each gram of Hydroquinone USP, 4% Skin Bleaching Cream contains 40 mg of hydroquinone USP, in a vanishing cream base of aqua (water), BHT, cetyl alcohol, disodium EDTA, glycerin, glycolic acid, methylparaben, propylparaben, saponins, sodium lauryl sulfate, sodium metabisulfite, stearyl alcohol, tetrahexyldecyl ascorbate, and tocopheryl acetate. Chemically, hydroquinone is C 6 H 6 O 2 and has a molecular weight of 110.11. The chemical name is 1,4 dihydroxybenzene, and the structural formula of hydroquinone is: structure.jpg

Hydroquinone USP, 4% Skin Bleaching Cream is indicated for the gradual bleaching of hyperpigmented skin conditions such as chloasma, melasma, freckles, senile lentigines, and other unwanted areas of melanin hyperpigmentation.

Hydroquinone USP, 4% Skin Bleaching Cream should be applied to affected areas and rubbed in well twice daily, in the morning and before bedtime, or as directed by a physician. If no improvement is seen after 2 months of treatment, use of this product should be discontinued. There is no recommended dosage for pediatric patients under 12 years of age except under the advice and supervision of a physician.

Prior history of sensitivity or allergic reaction to hydroquinone or to any of the ingredients of the product. The safety of topical hydroquinone use during pregnancy or for children (12 years and under) has not been established.

(see WARNINGS ) Test for skin sensitivity before using by applying a small amount to an unbroken patch of skin; check within 24 hours. Minor redness is not a contraindication, but where there is itching or vesicle formation or excessive inflammatory response further treatment is not advised. Close patient supervision is recommended. Hydroquinone is a skin bleaching agent which may produce unwanted cosmetic effects if not used as directed. The physician should be familiar with the contents of this insert before prescribing or dispensing this medication. Sunscreen use is an essential aspect of hydroquinone therapy because even minimal sunlight sustains melanocytic activity. To prevent repigmentation, during treatment and maintenance therapy, sun exposure on treated skin should be avoided by application of a broad spectrum sunscreen (SPF 15 or greater) or by use of protective clothing. Avoid contact with eyes and mucous membranes. Keep this and all medications out of reach of children. In case of accidental ingestion, call a physician or a poison control center immediately. Patients are cautioned on concomitant use of medications that are known to be photosensitizing. Studies of hydroquinone in animals have demonstrated some evidence of carcinogenicity. The carcinogenic potential of hydroquinone in humans is unknown. Published studies have demonstrated that hydroquinone is a mutagen and a clastogen. Treatment with hydroquinone has resulted in positive findings for genetic toxicity in the Ames assay in bacterial strains sensitive to oxidizing mutagens, in in vitro studies in mammalian cells, and in the in vivo mouse micronucleus assay. Teratogenic Effects: Pregnancy Category C - Animal reproduction studies have not been conducted with topical hydroquinone. It is also not known whether topical hydroquinone can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Topical hydroquinone should be given to a pregnant woman only if clearly needed. It is not known whether this drug is excreted in human milk. Because many drugs are excreted in human milk, caution should be exercised when topical hydroquinone is administered to a nursing woman. Safety and effectiveness for pediatric patients below the age of 12 years have not been established.

The following adverse reactions have been reported: dryness and fissuring of paranasal and infraorbital areas, erythema, and stinging.

Patients are cautioned on concomitant use of medications that are known to be photosensitizing.

Hydroquinone USP, 4% Skin Bleaching Cream is available as follows: 1 oz (28.4 g) tube (NDC 75834-137-01) STORAGE Hydroquinone USP, 4% Skin Bleaching Cream should be stored at controlled room temperature (20-25°C) (68-77°F). Darkening of this product is normal. This will not affect performance or safety. All prescription substitutions and/or recommendations using this product shall be made subject to state and federal statutes as applicable. Please NOTE: This is not an Orange Book product and has not been subjected to FDA therapeutic or other equivalency testing. No representation is made as to generic status or bioequivalency. Each person recommending a prescription substitution using this product shall make such recommendation based on his/her professional knowledge and opinion, upon evaluating the active ingredients, inactive ingredients, excipients and chemical information provided herein. REFERENCES 1 DENTON C., LERNER A.B., FITZPATRICKT.B. Inhibition of Melanin Formation by Chemical Agents Journal of Investigative Dermatology 1952, 18:119-135. 2 JIMBOW K., OBATA H., PATHAK M., FITZPATRICK T.B. Mechanism of Depigmentation by Hydroquinone Journal of Investigative Dermatology 1974, 62:436-449. 3 PARRISH J.A., ANDERSON R.R., URBACH F., PITTS D. UVA, Biological Effects of Ultraviolet Radiation with Emphasis on Human Responses to Longwave Ultraviolet Plenum Press, New York and London, 1978, p. 151. Manufactured for: Nivagen Pharmaceuticals, Inc. Sacramento, CA 95827 USA Toll free number: 1-877-977-0687 Rev. 02/2022 Hydroquinone USP, 4% Skin Bleaching Cream

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) 1 and suppression of other melanocyte metabolic processes (Jimbow, K. et al., 1974) 2 . Exposure to sunlight or ultraviolet light will cause repigmentation of bleached areas (Parrish, J.A. et al., 1978) 3 .

28.4 g Tube Carton tube.jpg