Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Trimethylamine N Oxide, More Red Meat for the Vascular Scientists Hypertension Carnitine, Choline, Cancer, & Cholesterol: The TMAO Connection Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications