Title: Sulfa Allergy: Drug List, Symptoms, Treatment, and More
Headings: What Is a Sulfa Allergy?
What Is a Sulfa Allergy?
Overview
Sulfa vs. sulfite allergy
What are the symptoms?
Are there any complications?
Anaphylaxis
Stevens-Johnson syndrome
What types of drugs cause this allergy?
Are sulfas found in foods?
What are the treatment options?
How to prevent a sulfa allergic reaction
The takeaway

Content: Sulfa Allergy: Drug List, Symptoms, Treatment, and More
What Is a Sulfa Allergy? Medically reviewed by Elaine K. Luo, M.D. — Written by Jill Seladi-Schulman, Ph.D. — Updated on September 29, 2018
Symptoms
Complications
Causes
Treatment
Prevention
Takeaway
Overview
A sulfa allergy is when you have an allergic reaction to drugs that contain sulfa. About 3 percent
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of people prescribed sulfa antibiotics will have an adverse reaction to them, according to one review. However, it’s estimated that of those who have an adverse reaction, only 3 percent
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are true allergic reactions. That means that number of people who experience an allergic reaction to sulfa is extremely low. Sulfa vs. sulfite allergy
Sulfa allergies and sulfite allergies aren’t the same thing. Sulfites occur naturally, or are used as a preservative agent in some foods and drinks. Sulfa medications and sulfites found in food and drink aren’t related to each other. The similarity between their names can cause some confusion.