Olive leaf extract (OLE) reduces mast cell mediated allergic inflammation ScienceDirect Frontiers Glutathione deficiency in the pathogenesis of SARS CoV 2 infection and its effects upon the host immune response in severe COVID 19 disease Mast Cell Activation Syndrome San Diego Naturopathic Doctor & IV Therapy 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. Glutathione pH responsive copper based nanoplatform for amplified chemodynamic therapy through synergistic cycling regeneration of reactive oxygen species and dual glutathione depletion ScienceDirect Mast cell stabilisers, leukotriene antagonists and antihistamines: A rapid review of the evidence for their use in COVID 19 The Centre for Evidence Based Medicine