which drugs might cause problems in patients with sulfa allergies

There's confusion about which drugs might cause problems in patients with sulfa allergies.

About 3% of patients develop allergic reactions to sulfonamide antibiotics...sulfamethoxazole, sulfisoxazole, sulfacetamide, etc.

Most of these reactions are mild...rash, itching, or hives. But some patients develop anaphylaxis or other severe reactions.

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