Polycystic Ovary Syndrome (PCOS): Symptoms & Nutritional Strategies. Life Extension Acetyl l Carnitine Ameliorates Metabolic and Endocrine Alterations in Women with PCOS: A Double Blind Randomized Clinical Trial Advances in Therapy Springer Nature Link How L Carnitine Supports Fat Metabolism in PCOS Oana Posts 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.