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. AAAAI Mast Cell Disorders Committee Work Group Report: Mast cell activation syndrome (MCAS) diagnosis and management Journal of Allergy and Clinical Immunology MTHFR and LC, CFS, POTS, MCAS, SIBO, EDS: Methylating the Alphabet Article (Preprint v1) by Patrick Chambers Qeios Glutathione Pro Liposomal, 200 mg MCS Formulas Methylation cycle hypothesis MEpedia Californians push back against proposed restrictions on glutathione and other alternative treatments