There's a reason L carnitine keeps showing up in PCOS research Because PCOS is closely tied to insulin resistance, inflammation, and metabolic dysfunctionand L carnitine plays a role in energy metabolism and fat utilization. Metabolites as regulators of insulin sensitivity and metabolism Nature Reviews Molecular Cell Biology 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 Supplementation in the Diabetic Heart ABC Cardiol Insulin Resistance: Causes, Signs, and 7 Helpful Supplements Wellness Hub Role of carnitine in disease Nutrition & Metabolism Springer Nature Link