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If I have sulfa allergies, what drugs should I avoid?

ANSWER

Here are a few examples of common sulfa drugs that could cause problems:

  • Sulfamethoxazole/trimethoprim (Bactrim, Sulfatrim): a sulfa combination drug that can be taken in liquid or pill form for many types of infections
  • Sulfacetamide (BLEPH-10): drops for eye infections
  • Sulfadiazine silver (Silvadene): cream to prevent and treat burn infections
  • Sulfasalazine (Azulfidine): pills for rheumatoid arthritis and inflammatory bowel disease

SOURCES:

DermNet New Zealand: “Sulfa Drugs and the Skin.”

Canadian Family Physician : “Approach to Managing Patients with Sulfa Allergy.”

American College of Allergy, Asthma and Immunology: “Drug Allergies.”

Merck Manual, Professional Version: “Sulfonamides.”

Cleveland Clinic: “Sulfite Sensitivity.”

Reviewed by Jennifer Robinson on May 12, 2019

SOURCES:

DermNet New Zealand: “Sulfa Drugs and the Skin.”

Canadian Family Physician : “Approach to Managing Patients with Sulfa Allergy.”

American College of Allergy, Asthma and Immunology: “Drug Allergies.”

Merck Manual, Professional Version: “Sulfonamides.”

Cleveland Clinic: “Sulfite Sensitivity.”

Reviewed by Jennifer Robinson on May 12, 2019

NEXT QUESTION:

Are any sulfa drugs safe if I have sulfa allergies?

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