L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe 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 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. L Carnitine Linus Pauling Institute Oregon State University L Carnitine L Tartrate: 8 Key Benefits Dr. Lam A Functional Medicine Approach to PCOS