PCOS Nutrition Center L Carnitine (120 Capsules) 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 Nutrition for Polycystic Ovary Syndrome (PCOS) Foundation for Female Health Awareness L Carnitine L Tartrate is the next supplement in my recommendations for women suffering from PCOS. A study conducted in 2016 (Sammini et al) examined the effects of a small 250mg dose of Carnitine Adding L carnitine to antagonist ovarian stimulation doesn't improve the outcomes of IVF ICSI cycle in patients with polycystic ovarian syndrome: a double blind randomized clinical trial Journal of Ovarian Research Springer