L Carnitine Linus Pauling Institute Oregon State University Acetyl l Carnitine Ameliorates Metabolic and Endocrine Alterations in Women with PCOS: A Double Blind Randomized Clinical Trial Advances in Therapy Springer Nature Link Role of L carnitine in female infertility Reproductive Biology and Endocrinology Springer Nature Link How L Carnitine Supports Fat Metabolism in PCOS Oana Posts Effects of carnitine on glucose and lipid metabolic profiles and fertility outcomes in women with polycystic ovary syndrome: A systematic review and metaanalysis Gong 2023 Clinical Endocrinology Wiley Online Library Frontiers Dietary supplements in polycystic ovary syndromecurrent evidence