L Carnitine Male Enhancement: What the Evidence Shows for Energy, Sperm Health, and Performance Oxidation of trimethylamine to trimethylamine N oxide facilitates high hydrostatic pressure tolerance in a generalist bacterial lineage Science Advances Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Long Term Changes in Gut Microbial Metabolite Trimethylamine N Oxide and Coronary Heart Disease Risk JACC Characterization of TMAO productivity from carnitine challenge facilitates personalized nutrition and microbiome signatures discovery Microbiome Springer Nature Link