Nutritional Supplements and Complementary Therapies in Polycystic Ovary Syndrome Advances in Nutrition L Carnitine: Benefits, Side Effects, And Dosage, Per Dietitians Polycystic Ovary Syndrome (PCOS): Symptoms & Nutritional Strategies. Life Extension 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 L Carnitine has a range of benefits for women with PCOS but, a new study set out to look at carnitine's impact on some of PCOS key indicators. One of those benefits reported Frontiers Gut microbiota: an emerging target connecting polycystic ovarian syndrome and insulin resistance