L Carnitine intake and high trimethylamine N oxide plasma levels correlate with low aortic lesions in ApoE transgenic mice expressing CETP Atherosclerosis Low Bioavailability and High TMAO Production: Novel Insights Into Acetylcarnitine and Carnitine Metabolism KrimsDavis 2025 Molecular Nutrition & Food Research Wiley Online Library Long Term Changes in Gut Microbial Metabolite Trimethylamine N Oxide and Coronary Heart Disease Risk JACC Dietary supplementation of l carnitine ameliorates metabolic syndrome independent of trimethylamine N oxide produced by gut microbes in high fat diet induced obese mice Food & Function (RSC Publishing) Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect Dietary allicin reduces transformation of L carnitine to TMAO through impact on gut microbiota ScienceDirect