Role of carnitine in disease Nutrition & Metabolism Springer Nature Link Frontiers L carnitine prevents lenvatinib induced muscle toxicity without impairment of the anti angiogenic efficacy Most people talk about carnitine like it is one supplement. It is not. Acetyl L carnitine and L carnitine L tartrate do different jobs, and picking the wrong one for the wrong goal is where people When to take L carnitine: Dosage, forms, and side effects