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SODIUM SULFACETAMIDE AND SULFUR CLARIFYING WASH IN A UREA VEHICLE
sulfacetamide sodium and
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----------SODIUM SULFACETAMIDE 10% and SULFUR 4% Clarifying Wash in a Urea Vehicle For Topical Use Only
DESCRIPTION: Sodium sulfacetamide is a sulfonamide with antibacterial activity. Sulfur acts as a keratolytic agent. Chemically, sodium sulfacetamide is N-[(4-aminophenyl)sulfonyl]-acetamide, monosodium salt, monohydrate. The structural formula is:
Each mL of Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash contains 100 mg of sodium sulfacetamide and 40 mg of sulfur in an emulsion base containing urea 10%, sodium methyl cocoyl taurate, disodium oleamido MEA sulfosuccinate, sodium cocoyl isethionate, cetyl alcohol, glyceryl stearate and PEG 100 stearate, stearyl alcohol, magnesium aluminum silicate, xanthan gum, methylparaben, disodium EDTA, butylated hydroxytoluene, sodium thiosulfate, fragrance, propylparaben, and purified water.
CLINICAL PHARMACOLOGY: The most widely accepted mechanism of action of sulfonamides is the Woods-Fildes theory, which is based on the fact that sulfonamides act as competitive antagonists to para-aminobenzoic acid (PABA), an essential component for bacterial growth. While absorption through intact skin has not been determined, sodium sulfacetamide is readily absorbed from the gastrointestinal tract when taken orally and excreted in the urine, largely unchanged. The biological half-life has variously been reported as 7 to 12.8 hours. The exact mode of action of sulfur in the treatment of acne is unknown, but it has been reported that it inhibits the growth of Propionibacterium acnes and the formation of free fatty acids.
INDICATIONS: Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash is indicated in the topical control of acne vulgaris, acne rosacea and seborrheic dermatitis.
CONTRAINDICATIONS: Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash is contraindicated for use by patients having known hypersensitivity to sulfonamides, sulfur or any other component of this preparation. Not for use by kidney patients.
WARNINGS: Although rare, sensitivity to sodium sulfacetamide may occur. Therefore, caution and careful supervision should be observed when prescribing this drug for patients who may be prone to hypersensitivity to topical sulfonamides. Systemic toxic reactions such as agranulocytosis, acute hemolytic anemia, purpura hemorrhagica, drug fever, jaundice, and contact dermatitis indicate hypersensitivity to sulfonamides. Particular caution should be employed if areas of denuded or abraded skin are involved.FOR EXTERNAL USE ONLY. Keep away from eyes. Keep out of reach of children. Keep bottle tightly closed.
PRECAUTIONS: General -If irritation develops, use of the product should be discontinued and appropriate therapy instituted. Patients should be carefully observed for possible local irritation or sensitization during long-term therapy. The object of this therapy is to achieve desquamation without irritation, but sodium sulfacetamide and sulfur can cause reddening and scaling of the epidermis. These side effects are not unusual in the treatment of acne vulgaris, but patients should be cautioned about the possibility.
Information for Patients - Avoid contact with eyes, eyelids, lips and mucous membranes. If accidental contact occurs, rinse with water. If excessive irritation develops, discontinue use and consult your physician.
Carcinogenesis, Mutagenesis and Impairment of Fertility - Long-term studies in animals have not been performed to evaluate carcinogenic potential.
Pregnancy - Category C. Animal reproduction studies have not been conducted with Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash. It also is not known whether Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash should be given to a pregnant woman only if clearly needed.
Nursing Mothers - It is not known whether sodium sulfacetamide is excreted in human milk following topical use of Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash. However, small amounts of orally ad-ministered sulfonamides have been reported to be eliminated in human milk. In view of this and because many drugs are excreted in human milk, caution should be exercised when Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash is administered to a nursing woman.
DOSAGE AND ADMINISTRATION:
HOW SUPPLIED: Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash is available in a 16 fl. oz (473 mL) bottle,
Store Sodium Sulfacetamide 10% and Sulfur 4% clarifying wash at 15˚-25˚C (59˚-77˚F).
Protect from freezing.
E. FOUGERA and CO.
A division of Nycomed US Inc.
Melville, New York 11747
Groupe PARIMA, Inc.
Montreal, QC H4S 1X6 CANADA
U.S. Patent No. 6,429,231
Revised: 05/2010 E. Fougera & Co. A division of Nycomed US Inc.
Reproduced with permission of U.S. National Library of Medicine
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