Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Garlic compounds may boost cardio health indirectly via gut microbiota Trimethylamine N oxide (TMAO) is a small molecule produced in humans primarily by the gut liver axis and has become an important biomarker, and possible mediator, of cardiometabolic and renal disease. Dietary choline, phosphatidylcholine ( Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Frontiers Gut microbiota dependant trimethylamine N oxide and hypertension