Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link Gut Microbiota and Ischemic Stroke: The Role of Trimethylamine N Oxide Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Frontiers Effects of choline metabolitetrimethylamine N oxide on immunometabolism in inflammatory bowel disease