Full article: Acetyl L carnitine: from a biological curiosity to a drug for the peripheral nervous system and beyond 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. Acetyl L Carnitine Supplement Allergy Research Group Carnitine: Genetic Variants Affecting Mitochondrial Energy and Health