Mast cells are hypersensitive immune cells that release histamine and other inflammatory mediatorsoften in response to oxidative stress, environmental toxins, and immune imbalance. Many patients with MCAS have low levels of glutathione. Histamine Intolerance and How to Support Healthy Histamine Levels Seeking Health Amazon.com: Allergy Research Group ARG Acetyl Glutathione 100 mg Stabilized Bioavailable Glutathione Antioxidant & Immune System Support Well Absorbed Formula 60 Servings 60 Tablets : Health & Household Glutathione Reductase human The Importance of Glutathione in Health and Healing Dr. Todd Maderis Adipocyte derived glutathione promotes obesity related breast cancer by regulating the SCARB2 ARF1 mTORC1 complex: Cell Metabolism