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Name:Sulfamylon
Manufacturer:Mylan Bertek Pharmaceuticals Inc.
Category:Prescription Marketed Drugs


Sulfamylon® Cream

SULFAMYLON - mafenide acetate cream 
Mylan Bertek Pharmaceuticals Inc.

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Sulfamylon® Cream

Brand of MAFENIDE ACETATE CREAM, USP

Topical Antibacterial Agent for Adjunctive Therapy in Second- and Third-Degree Burns

DESCRIPTION

SULFAMYLON Cream is a soft, white, nonstaining, water-miscible, anti-infective cream for topical administration to burn wounds.

SULFAMYLON Cream spreads, easily, and can be washed off readily with water. It has a slight acetic odor. Each gram of SULFAMYLON Cream contains mafenide acetate equivalent to 85 mg of the base. The cream vehicle consists of cetyl alcohol, steryl alcohol, cetyl esters wax, polyoxyl 40 stearate, polyoxyl 8 stearate, glycerin, and water, with methylparaben, propylparaben, sodium metabisulfite, and edetate disodium as preservatives.

Chemically, mafenide acetate is α-Amino-ρ-toluenesulfonamide monoacetate and has the following structural formula:

Image from Drug Label Content

CLINICAL PHARMACOLOGY

SULFAMYLON Cream, applied topically, produces a marked reduction in the bacterial population present in the avascular tissues of second- and third-degree burns. Reduction in bacterial growth after application of SULFAMYLON Cream has also been reported to permit spontaneous healing of deep partial-thickness burns, and thus prevent conversion of burn wounds from partial-thickness to full-thickness. It should be noted, however, that delayed eschar separation has occurred in some cases.

Absorption and Metabolism

Applied topically, SULFAMYLON Cream diffuses through devascularized areas, is absorbed, and rapidly converted to a metabolite (ρ-carboxybenzenesulfonamide) which is cleared through the kidneys. SULFAMYLON is active in the presence of pus and serum, and its activity is not altered by changes in the acidity of the environment.

Antibacterial Activity

SULFAMYLON exerts bacteriostatic action against many gram-negative and gram-positive organisms, including Pseudomonas aeruginosa and certain strains of anaerobes.

INDICATIONS AND USAGE

SULFAMYLON Cream is a topical agent indicated for adjunctive therapy of patients with second- and third-degree burns.

CONTRAINDICATIONS

SULFAMYLON is contraindicated in patients who are hypersensitive to it. It is not known whether there is cross sensitivity to other sulfonamides.

WARNINGS

Fatal hemolytic anemia with disseminated intravascular coagulation, presumably related to a glucose-6-phosphate dehydrogenase deficiency, has been reported following therapy with SULFAMYLON Cream.

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.

PRECAUTIONS

SULFAMYLON and its metabolite, ρ-carboxybenzenesulfonamide, inhibit carbonic anhydrase, which may result in metabolic acidosis, usually compensated by hyperventilation. In the presence of impaired renal function, high blood levels of SULFAMYLON and its metabolite may exaggerate the carbonic anhydrase inhibition. Therefore, close monitoring of acid-base balance is necessary, particularly in patients with extensive second-degree or partial-thickness burns and in those with pulmonary or renal dysfunction. Some burn patients treated with SULFAMYLON Cream have also been reported to manifest an unexplained syndrome of marked hyperventilation with resulting respiratory alkalosis (slightly alkaline blood pH, low arterial pCO2, and decreased total CO2); change in arterial pO2 is variable. The etiology and significance of these findings are unknown.

Mafenide acetate cream should be used with caution in burn patients with acute renal failure.

SULFAMYLON Cream should be administered with caution to patients with history of hypersensitivity to mafenide. It is not known whether there is cross sensitivity to other sulfonamides.

Fungal colonization in and below eschar may occur concomitantly with reduction of bacterial growth in the burn wound. However, fungal dissemination through the infected burn wound is rare.

Carcinogenesis, Mutagenesis, Impairment Of Fertility

No long-term animal studies have been performed to evaluate the drug's potential in these areas.

Pregnancy Category C

Animal reproduction studies have not been conducted with SULFAMYLON. It is also not known whether SULFAMYLON can cause fetal harm when administered to a pregnant woman or can affect reproduction capacity. Therefore, the preparation is not recommended for the treatment of a women of childbearing potential, unless the burned area covers more than 20% of the total body surface, or the need for the therapeutic benefit of SULFAMYLON Cream is, in the physician's judgment, greater than the possible risk to the fetus.

Nursing Mothers

It is not known whether mafenide acetate is excreted in human milk. Because many drugs are excreted in human milk and because of the potential for serious adverse reaction in nursing infants from SULFAMYLON, a decision should be made whether to discontinue nursing or to discontinue the drug, taking into account the importance of the drug to the mother.

Pediatric Use

Same as for adults. (See DOSAGE AND ADMINISTRATION.)

ADVERSE REACTIONS

It is frequently difficult to distinguish between an adverse reaction to SULFAMYLON Cream and the effect of a severe burn. A single case of bone marrow depression and a single case of acute attack of porphyria have been reported following therapy with SULFAMYLON Cream. Fatal hemolytic anemia with disseminated intravascular coagulation, presumably related to a glucose-6-phosphate dehydrogenase deficiency, has been reported following therapy with SULFAMYLON Cream.

Dermatologic: The most frequently reported reaction was pain on application or a burning sensation. Rare occurrences are excoriation of new skin and bleeding of skin.

Allergic: Rash itching, facial edema, swelling, hive, blisters, erythema, and eosinophilia.

Respiratory: Tachypnea or hyperventilation, decrease in arterial pCO2.

Metabolic: Acidosis, increase in serum chloride.

Accidental ingestion of SULFAMYLON Cream has been reported to cause diarrhea.

DOSAGE AND ADMINISTRATION

Prompt institution of appropriate measures for controlling shock and pain is of prime importance. The burn wounds are then cleansed and debrided, and SULFAMYLON Cream is applied with a sterile gloved hand. Satisfactory results can be achieved with application of the cream once or twice daily, to a thickness of approximately 1/16 inch; thicker application is not recommended. The burned areas should be covered with SULFAMYLON Cream at all times. Therefore, whenever necessary, the cream should be reapplied to any areas from which it has been removed (e.g., by patient activity). The routine of administration can be accomplished in minimal time, since dressings usually are not required, if individual patient demands make them necessary, however, only a thin layer of dressings should be used.

When feasible, the patient should be bathed daily to aid in debridement. A whirlpool bath is particularly helpful, but the patient may be bathed in bed or in a shower.

The duration of therapy with SULFAMYLON Cream depends on each patient's requirements. Treatment is usually continued until healing is progressing well or until the burn site is ready for grafting. SULFAMYLON Cream should not be withdrawn from the therapeutic regimen while there is the possibility of infection. However, if allergic manifestations occur during treatment with SULFAMYLON Cream, discontinuation of treatment should be considered.

If acidosis occurs and becomes difficult to control, particularly in patients with pulmonary dysfunction, discontinuing therapy SULFAMYLON Cream for 24 to 48 hours while continuing fluid therapy may aid in restoring acid-base balance.

HOW SUPPLIED

     16 oz. Plastic Jar (453.6 g) - NDC 51079-623-83

     4 oz. Tube (113.4 g) - NDC 51079-623-82

     2 oz. Tube (56.7 g) - NDC 51079-623-81

Avoid exposure to excessive heat (temperature above 104° F or 40° C).

Rx only

Manufactured by: Mylan Bertek Pharmaceuticals Inc.
                            Sugar Land, TX 77478

Distributed by: UDL Laboratories, Inc.
                       Rockford, IL 61103

REVISED APRIL 2006
030.2


SULFAMYLON 
mafenide acetate cream
Product Information
Product Type HUMAN PRESCRIPTION DRUG Item Code (Source) NDC:51079-623
Route of Administration TOPICAL DEA Schedule     
INGREDIENTS
Name (Active Moiety) Type Strength
Mafenide Acetate (Mafenide) Active 85 MILLIGRAM  In 1 GRAM
cetyl alcohol Inactive  
stearyl alcohol Inactive  
cetyl esters wax Inactive  
polyoxyl 40 stearate Inactive  
polyoxyl 8 stearate Inactive  
glycerin Inactive  
water Inactive  
methylparaben Inactive  
propylparaben Inactive  
sodium metabisulfite Inactive  
edetate disodium Inactive  
Product Characteristics
Color      Score     
Shape Size
Flavor Imprint Code
Contains     
Packaging
# Item Code Package Description Multilevel Packaging
1 51079-623-81 1 TUBE In 1 CARTON contains a TUBE
1 56.7 g (GRAM) In 1 TUBE This package is contained within the CARTON (51079-623-81)
2 51079-623-82 1 TUBE In 1 CARTON contains a TUBE
2 113.4 g (GRAM) In 1 TUBE This package is contained within the CARTON (51079-623-82)
3 51079-623-83 6 JAR In 1 BOX contains a JAR
3 453.6 g (GRAM) In 1 JAR This package is contained within the BOX (51079-623-83)

Revised: 01/2008 Mylan Bertek Pharmaceuticals Inc.



Source: http://dailymed.nlm.nih.gov
Reproduced with permission of U.S. National Library of Medicine


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