Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn The Role of L Carnitine in Kidney Disease and Related Metabolic Dysfunctions L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Carnitine: the claims and why it may not work 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 L Carnitine Linus Pauling Institute Oregon State University