Early research into L carnitine was often cited as underwhelming, showing negligible changes in muscle carnitine content and fat loss outcomes. However, these findings may have been limited by a short study window The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions L Carnitine: Benefits, side effects, and dosage When to take L carnitine: Dosage, forms, and side effects The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions Targeting Skeletal Muscle Dysfunction With L Carnitine for the Treatment of Patients With Chronic Obstructive Pulmonary Disease In Vivo