When to take L carnitine: Dosage, forms, and side effects Creatine & Acetyl L Carnitine Energy Plus Life Extension Europe L Carnitine's Effect on the Biomarkers of Metabolic Syndrome: A Systematic Review and Meta Analysis of Randomized Controlled Trials The bright and the dark sides of L carnitine supplementation: a systematic review Journal of the International Society of Sports Nutrition Springer Nature Link L carnitine is an amino acid that is produced in your body that helps the body turn fat into energy. Carnitine is found in nearly all cells of the body and researchers have