Intestinal mast cellderived leukotrienes mediate the anaphylactic response to ingested antigens : r IBSResearch BPC 157 Mast Cell Activation Syndrome and the Triad of MCAS, POTS, and Hypermobile EDS : r IBSResearch BPC 157 Read this paper describing a large case series of patients with mast cell activation syndrome (MCAS) and comorbidities, whose MCAS associated symptoms improved significantly on GLP1 agonists. To summarize: 47