L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy. Full article: Improved insulin sensitivity and reproductive profile in overweight obese PCOS patients undergoing integrative treatment with carnitines, L arginine, L cysteine and myo inositol Semaglutide With B12 For Weight Loss Seattle & Tacoma 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.