Role of Oxidative Stress and Carnitine in PCOS Patients IntechOpen PDF) The Effect of L Carnitine, Green Tea Extract and Lotus Leaf Extract on the Body Fat Percentage in High Energy Diet Induced Obese Rats 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 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.