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) Combining Berberine and L Carnitine can be beneficial for weight management, metabolism, and overall health. Berberine may improve insulin sensitivity, lower blood sugar, and support weight loss, while L carnitine helps the body use Frontiers The effects of L carnitine supplementation on glycemic markers in adults: A systematic review and dose response meta analysis Carnitine supplementation improves metabolic flexibility and skeletal muscle acetylcarnitine formation in volunteers with impaired glucose tolerance: A randomised controlled trial eBioMedicine Portal vein enriched metabolites as intermediate regulators of the gut microbiome in insulin resistance: Cell Metabolism L carnitine tartrate supplementation in the fight against infectious disease