Gut microbiota metabolites, amino acid metabolites and improvements in insulin sensitivity and glucose metabolism: the POUNDS Lost trial Gut 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) L Carnitine Shots: Boost Fat Loss, Energy & Metabolism! Oral carnitine supplementation improves glucose homeostasis and affects insulin sensitivity indices during an oral glucose toler