Carnitine traffic and human fertility ScienceDirect Frontiers Gut microbiota: an emerging target connecting polycystic ovarian syndrome and insulin resistance Frontiers Dietary supplements in polycystic ovary syndromecurrent evidence A Functional Medicine Approach to PCOS 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. 9 Best Supplements for Polycystic Ovarian Syndrome (PCOS)