(HYDROQUINONE 4% USP SKIN BLEACHING MOISTURIZING TOPICAL CREAM)

Rx only

FOR EXTERNAL USE ONLY: NOT FOR OPHTHALMIC, NASAL OR OTIC USE.

DESCRIPTION

Each gram of MELQUIN® HP 4% CREAM Contains: ACTIVE: 40mg Hydroquinone USP in a cream base of INACTIVES: Cetostearyl Alcohol, Glycerine, Mineral Oil, Propylene Glycol, Purified Water, Sodium Lauryl Sulfate, Sodium Metabisulfite, Sorbic Acid and White Petrolatum.

Hydroquinone is 1, 4-Benzenediol, with a chemical formula of C6H6O2 and a molecular weight of 110.11.

The structural formula is:

C6H6O2

CLINICAL PHARMACOLOGY

Topical application of hydroquinone produces a reversible depigmentation of the skin by the 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 the bleached areas [Parrish, J.A. et al., 1978 (3)].

INDICATIONS AND USAGE

MELQUIN® HP 4% CREAM is indicated for the gradual bleaching of hyperpigmented skin conditions such as chloasma, melasma, freckles, senile lentigines and other undesired areas of melanin hyperpigmentation.

CONTRAINDICATIONS

MELQUIN® HP 4% CREAM is contraindicated in persons who have shown hypersensitivity to hydroquinone or any of the other ingredients. The safety of topical treatment of hydroquinone during pregnancy or in children (12 years and under) has not been established. (See PRECAUTIONS).

WARNINGS

1. Hydroquinone is a skin bleaching agent which may produce undesired effects if not used as directed. The physician should be familiar with the contents of this insert before prescribing or dispensing this medication.

2. To evaluate possible susceptibility to irritation or sensitivity, each patient should begin by applying the medication to a small portion of unbroken skin at or near the pigmented area over a period of several days. Minor redness is not necessarily a contraindication, but treatment should be discontinued if itching, excessive inflammation or vesicle formation occurs. Close patient supervision is recommended. Use of MELQUIN® HP 4% CREAM in paranasal and infraorbital areas increases the chance of irritations (See ADVERSE REACTIONS). If no improvement is seen after two months of treatment, use of this product should be discontinued.

3. There are no sunscreens in MELQUIN® HP 4% CREAM. Sunscreen use is an essential aspect of hydroquinone therapy since even minimal sunlight exposure stimulates melanocyte activity. During the depigmentation maintenance treatment subsequent to the intensive depigmentation therapy, sun exposure of the bleached skin should be avoided to prevent repigmentation. For daytime treatment, use NUQUIN® HP 4% CREAM, NUQUIN® HP 4% GEL or MELPAQUE® HP 4% CREAM.

4. Contains Sodium Metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in nonasthmatic people.

5. Keep this and all other medications out of reach of children. In case of accidental ingestion, call a physician or a poison control center immediately.

6. Avoid contact with eyes. In case of accidental contact, patient should rinse eyes thoroughly with water and contact physician. A bitter taste and antiseptic effect may occur if applied to the lips.

PRECAUTIONS

(SEE WARNINGS)

ADVERSE REACTIONS

No systemic adverse reactions have been reported. Occasional hypersensitivity (localized contact dermatitis) may occur in which case the medication should be discontinued and the physician notified immediately.

OVERDOSAGE

There have been no systemic reactions reported from the use of topical hydroquinone treatment. However, treatment should be limited to relatively small areas of the body at one time since some patients may experience a transient skin reddening and a mild burning sensation which does not preclude treatment.

DOSAGE AND ADMINISTRATION

MELQUIN® HP 4% CREAM should be applied to affected areas twice daily, in the morning and before bedtime, or as directed by a physician. Unnecessary solar exposure should be avoided. There is no recommended dosage for children under 12 years of age except under the advice and supervision of a physician. Keep container tightly closed. NOTE: Slight darkening of MELQUIN® HP 4% CREAM is normal and does not affect potency of the product.

HOW SUPPLIED

MELQUIN® HP 4% CREAM (Hydroquinone, USP 4%) is supplied as follows:

Distributed by:

STRATUS PHARMACEUTICALS INC
12379 SW 130TH STREET
MIAMI, FLORIDA 33186

Manufactured by:
Sonar Products, Inc.
Carlstadt, NJ 07072

Copyright ©1993, Stratus Pharmaceuticals, Inc.
All rights reserved.

HYDROQUINONE REFERENCES

1. Denton, C., Lerner, A., and Fitzpatrick, T., "Inhibition of Melanin Formation by Chemical Agents", J. Invest. Derm., 18:119-135, 1952.

2. Jimbow, K., Obata, M., Pathak, M., and Fitzpatrick, T., "Mechanisms of Depigmentation by Hydroquinone" J. Invest. Derm., 62:436- 449, 1974.

3. Parrish, J, Anderson, R., Urbach, F., and Pitts, D., " Biological Effects of Ultraviolet Radiation with Emphasis on Human Responses to Longwave Ultraviolet", Plenum Press, New York, 1978 (page 151).

Rvsd. JG-MCI 2013-148

PRINCIPAL DISPLAY PANEL - 28.4 g Tube Box

NDC 58980-472-10
Net WT. 1 OZ (28.4g)

MELQUIN® HP 4% CREAM

STRATUS
PHARMACEUTICALS INC

(HYDROQUINONE USP, 4%)

SKIN BLEACHING CREAM

Rx only

Distributed by Stratus Pharmaceuticals Inc., 12379 SW 130th Street, Miami, Florida 33186