Role of Oxidative Stress and Carnitine in PCOS Patients IntechOpen How Does Carnitine Support Hashimoto's? Dr. Izabella Wentz PCOS is complex but the right supplements can truly make a difference. When it comes to managing PCOS naturally, three supplements stand out for their science backed benefits: 1) Berberine often compared Comparison of short term and long term effects of peroral L carnitine intake: clinical implications of elevated TMAO levels in cardiovascular complications L Carnitine has become one of the most commonly asked about supplements over the past 18 months and I can see why when looking at all the research that has come out about it over the last 2ish years., l carnitine: Nutrition, pathology, and health benefits ScienceDirect