Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser

Rx Only

FOR EXTERNAL USE ONLY.

NOT FOR OPHTHALMIC USE.

DESCRIPTION: Each gram of Sodium Sulfacetamide and Sulfur (sodium sulfacetamide 9.8% w/w and sulfur 4.8% w/w) contains 98 mg of sodium sulfacetamide and 48 mg of colloidal sulfur in a vehicle consisting of: aloe barbadensis (aloe vera) leaf extract, butylated hydroxytoluene, camellia oleifera (green tea) leaf extract, cetyl alcohol, disodium oleamido MEA sulfosuccinate, edetate disodium, fragrance, glycerin, glyceryl monostearate, magnesium aluminum silicate, methylparaben, PEG-100 stearate, propylparaben, purified water, sodium cocoyl isethionate, sodium methyl cocoyl taurate, sodium thiosulfate, stearyl alcohol, xantham gum.

Sodium sulfacetamide is a sulfonamide with antibacterial activity while sulfur acts as a keratolytic agent. Sodium sulfacetamide is C ₈H ₉N ₂NaO ₃S·H ₂O with molecular weight of 254.24. Chemically, it is N-[(4-aminophenyl)sulfonyl]-acetamide, monosodium salt, monohydrate. The structural formula is:

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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 acnesand the formation of free fatty acids.

INDICATIONS:Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser is indicated for use in the topical control of acne vulgaris, acne rosacea and seborrheic dermatitis.

CONTRAINDICATIONS:Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser is contraindicated for use by patients having known hypersensitivity to sulfonamides, sulfur or any other component of this preparation. Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser is not to be used by patients with kidney disease.

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.

Sulfonamides are known to cause Stevens-Johnson syndrome in hypersensitive individuals. Stevens-Johnson syndrome also has been reported following the use of sodium sulfacetamide topically. Cases of drug induced systemic lupus erythematosus from topical sulfacetamide also have been reported. In one of these cases, there was a fatal outcome. KEEP OUT OF REACH OF CHILDREN.

PRECAUTIONS: FOR EXTERNAL USE ONLY. NOT FOR OPHTHALMIC USE.

ADVERSE REACTIONS:Although rare, sodium sulfacetamide may cause local irritation. Call your doctor for medical advice about side effects. To report SUSPECTED ADVERSE REACTIONS, contact the FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

DOSAGE AND ADMINISTRATION:Wash affected areas with Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser one to two times daily, or as directed by your physician. Avoid contact with eyes or mucous membranes. Wet skin and liberally apply to areas to be cleansed, massage gently into skin for 10 to 20 seconds, working into a full lather, rinse thoroughly and pat dry. If drying occurs, it may be controlled by rinsing cleanser off sooner or using cleanser less often.

HOW SUPPLIED:Sodium Sulfacetamide 9.8% and Sulfur 4.8% Cleanser is supplied in a 10 oz. (285 g) bottle, NDC 82429-109-10.

Store at 20°C to 25°C (67°F to 77°F); excursions permitted to between 15°C to 30°C (59°F to 86°F). See USP Controlled Room Temperature.

Note: Protect from freezing and excessive heat. The product may tend to darken slightly on storage. Slight discoloration does not impair the efficacy or safety of the product. Keep tube or packet tightly closed.

Occasionally, a slight yellowish discoloration may occur when an excessive amount of the product is used and comes in contact with white fabrics. This discoloration, however, presents no problem, as it is readily removed by ordinary laundering without bleaches.

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