Can a patient with a sulfonamide allergy safely receive metronidazole? Cross reactivity Between Sulfonamide Medications Download Scientific Diagram Datis If you have a sulfur sensitivity, glutathione can be problematic. Glutathione is primarily made up of sulfur, which can cause issues for those with a sulfur sensitivity. While Glutathione is What are the Side Effects of Glutathione? Should We Label Patients With a Sulfa Allergy? Lesson Learned the Hard Way Med Ed 101 Absence of Cross Reactivity between Sulfonamide Antibiotics and Sulfonamide Nonantibiotics New England Journal of Medicine