L Carnitine is one of the most hyped weight loss supplements online but here's what most won't tell you: Your body naturally produces L Carnitine using amino acids l, and a healthy person usually L Carnitine Dosage for Weight Loss: A Guide The Science of Good Health L Carnitine: Benefits, side effects, and dosage L Carnitine Advanced Orthomolecular Research Inc. Canada 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