What does glutathione do for MTHFR? Sulfa, Sulfite & Sulfate: Allergy Risk or No Concern? Differentiating Sulfur Compounds: Sulfa Drugs, Glucosamine Sulfate, Sulfur, and Sulfiting Agents 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 Sulfite & Sulfur Allergy Connection What You Need to Know 9 Health Benefits of Glutathione