L Carnitine Linus Pauling Institute Oregon State University 100% Pure Acetyl L Carnitine (ALCAR) Powder (Wholesale Pricing) USP Grade Adipocyte expressed SIRT3 manipulates carnitine pool to orchestrate metabolic reprogramming and polarization of macrophages Cell Death & Disease 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.