1. Sulfonamide cross-reactivity: is there evidence to support broad cross-allergenicity?
CONCLUSION:
A review of the professional literature and manufacturer-provided data did not find convincing evidence of broad cross-reactivity between antibacterial and nonantibacterial sulfonamide agents.
2. Glyburide (一种常用的磺脲类糖尿病药物)FDA sheet
其中禁忌症并没有提到sulfa过敏史。实际上通篇都没有提到sulfa的事情。