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SULFAMYLON

Generic: mafenide acetate

Verified·Apr 23, 2026
Manufacturer
Rising Pharma Holdings, Inc.
NDC
16571-723
RxCUI
201185
Route
TOPICAL
ICD-10 indication
T30.0

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About SULFAMYLON

What is this medication?

Sulfamylon is a prescription topical antibiotic primarily used to prevent and treat bacterial infections in patients with severe burns. The active ingredient is mafenide acetate, which belongs to the sulfonamide class of medications. It works by inhibiting the growth of a wide range of bacteria, including those that are often resistant to other types of antibiotics, helping to keep the burn wound clean and promoting the healing process.

This medication is commonly available as a cream or as a solution for topical application. When used on second or third-degree burns, it helps lower the risk of wound sepsis, which is a life-threatening infection that can spread through the body. It is important to apply the medication exactly as directed by a healthcare professional, as it can sometimes cause side effects like pain, burning, or allergic reactions at the site of application.

Copay & patient assistance

  • Patient Copay Amount: Not Publicly Available
  • Maximum Annual Benefit Limit: Not Publicly Available
  • Core Eligibility Restrictions: Not Publicly Available
  • RxBIN, PCN, and Group numbers: Not Publicly Available

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Prescribing information

From the FDA-approved label for SULFAMYLON. Official source: DailyMed (NLM) · Label effective Jul 3, 2023

Indications and usage
INDICATIONS AND USAGE SULFAMYLON Cream is a topical agent indicated for adjunctive therapy of patients with second- and third-degree burns.
Dosage and administration
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.
Contraindications
CONTRAINDICATIONS SULFAMYLON is contraindicated in patients who are hypersensitive to it. It is not known whether there is cross sensitivity to other sulfonamides.
Warnings
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.
Adverse reactions
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 pCO 2 . Metabolic: Acidosis, increase in serum chloride. Accidental ingestion of SULFAMYLON Cream has been reported to cause diarrhea. To report SUSPECTED ADVERSE REACTIONS, contact Rising Pharma Holdings, Inc. at 1-844-874-7464 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

Label text is reproduced as-is from the FDA-approved label. We do not paraphrase, summarize, or omit. Content above is for informational purposes only and is not medical advice. Always consult your prescribing clinician or pharmacist before making decisions about your medication.

Conditions we've indexed resources for

Click a condition to see copay cards, grants, and PA rules specific to it. For the full list of FDA-approved indications, see Prescribing information above.

Medicare Part D coverage

How SULFAMYLON appears across Medicare Part D plan formularies nationally. Source: CMS monthly Prescription Drug Plan file (2026-04-30).

Covered by plans

35%

1,904 of 5,509 plans

Most common tier

Tier 4

On 76% of covering formularies

Prior authorization required

0%

of covering formularies

TierFormularies on this tierShare
Tier 1 (preferred generic)14
15%
Tier 2 (generic)2
2%
Tier 3 (preferred brand)6
7%
Tier 4 (non-preferred brand)69
76%

Step therapy: 0% of formularies

Quantity limits: 59% of formularies

Coverage breadth: 91 of 65 formularies

How to read this:plans on the same formulary share tier + PA rules. Your specific plan's copay depends on (a) the tier above, (b) your plan's cost-share for that tier, (c) whether you're in the initial coverage phase or past the 2026 $2,000 out-of-pocket cap. For your exact plan, check its Summary of Benefits or log in to your Medicare.gov account. Copay cards don't apply to Medicare (federal law).

Prior authorization & coverage

PayerPAStep therapyCopay tier

Medicare Part D

Related drugs

How this page is sourced

  • Drug identity verified against openFDA NDC Directory.
  • Label text (when shown) originates from NLM DailyMed.
  • Copay and assistance URLs verified periodically; if you hit a broken link, tell us.