L Carnitine Dosage for Weight Loss: A Guide The Science of Good Health Identification of TMAO producer phenotype and hostdietgut dysbiosis by carnitine challenge test in human and germ free mice Gut L Carnitine intake and high trimethylamine N oxide plasma levels correlate with low aortic lesions in ApoE transgenic mice expressing CETP ScienceDirect Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications How to Choose the Best L Carnitine Supplement: A Smart Shopper's Guide Life Extension Full article: Gut microbes with the gbu genes determine TMAO production from L carnitine intake and serve as a biomarker for precision nutrition