PRASCION RA CREAM WITH SUNSCREENS – sulfacetamide sodium and sulfur cream 
Prasco Laboratories


Prascion RA with Sunscreens Cream sodium sulfacetamide 10% and sulfur 5%


Each gram of PRASCION RA Cream With Sunscreens contains 100 mg of sodium sulfacetamide and 50 mg of sulfur in a cream containing avobenzone, benzyl alcohol, C12-15 alkyl benzoate, cetostearyl alcohol, dimethicone, edetate disodium, emulsifying wax, monobasic sodium phosphate, octinoxate, propylene glycol, purified water, sodium thiosulfate, steareth-2, steareth-21.

Sodium sulfacetamide is a sulfonamide with antibacterial activity while sulfur acts as a keratolytic agent. Chemically, sodium sulfacetamide is N-[(4-aminophenyl) sulfonyl]-acetamide, monosodium salt, monohydrate. The structural formula is:


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 in unknown, but it has been reported that it inhibits the growth of Propionibacterium acnes and the formation of free fatty acids.


PRASCION RA Cream With Sunscreens is indicated in the topical control of acne vulgaris, acne rosacea and seborrheic dermatitis.


PRASCION RA Cream With Sunscreens is contraindicated for use by patients having known hypersensitivity to sulfonamides, sulfur or any other component of this preparation. This drug is not to be used by patients with kidney disease.


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.


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If irritation develops, use of the product should be discontinued and appropriate therapy instituted. For external use only. Keep away from eyes. 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 epidermis. These side effects are not unusual in the treatment of acne vulgaris, but patients should be cautioned about the possibility. Keep out of reach of children.

Carcinogenesis, Mutagenesis and Impairment of Fertility

Long-term studies in animals have not been performed to evaluate carcinogenic potential.


Category C. Animal reproduction studies have not been conducted with PRASCION RA Cream with Sunscreens. It is also not known whether this drug can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. It 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 PRASCION RA Cream With Sunscreens. However, small amounts of orally administered 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 this drug is administered to a nursing woman.

Pediatric Use

Safety and effectiveness in children under the age of 12 have not been established.


Although rare, sodium sulfacetamide may cause local irriation.


Apply a thin film of PRASCION RA Cream With Sunscreens to affected areas 1 to 3 times daily.


45 g tubes (NDC 66993-925-45)

Store at controlled room temperature 15°-30°C (59°-86°F).

U.S. Patent No. 7,022,332   Patent Pending

Manufactured for: Prasco Laboratories, Mason, OH 45040  USA

Manufactured by: Stiefel Laboratories, Inc., Coral Gables, FL 33134

Iss. 01/09


sodium sulfacetamide and sulfur  cream
Product Information
Product Type HUMAN PRESCRIPTION DRUG NDC Product Code (Source) 66993-925
Route of Administration TOPICAL DEA Schedule     
Active Ingredient/Active Moiety
Ingredient Name Basis of Strength Strength
Sulfacetamide Sodium (Sulfacetamide ) Sulfacetamide Sodium 100 mg  in 45 g
Sulfur (Sulfur) Sulfur 50 mg  in 45 g
Inactive Ingredients
Ingredient Name Strength
No Inactive Ingredients Found
Product Characteristics
Color      Score     
Shape Size
Flavor Imprint Code
# NDC Package Description Multilevel Packaging
1 66993-925-45 45 g In 1 TUBE None

Marketing Information
Marketing Category Application Number or Monograph Citation Marketing Start Date Marketing End Date
unapproved other 06/30/2009

Labeler – Prasco Laboratories (065969375)
Name Address ID/FEI Operations
Stiefel Laboratories, Inc. 002063378 manufacture
Revised: 08/2009Prasco Laboratories