According to a study published in Clinical Therapeutics, in people with type 2 diabetes and high cholesterol, taking L carnitine (1 gram twice daily) for 6 months significantly lowered lipoprotein(a) a genetic, Essential L Carnitine Optimal Health Systems Targeting Skeletal Muscle Dysfunction With L Carnitine for the Treatment of Patients With Chronic Obstructive Pulmonary Disease In Vivo The Role of Carnitine in Myocardial Dysfunction L Carnitine in the Secondary Prevention of Cardiovascular Disease: Systematic Review and Meta analysis Mayo Clinic Proceedings