is 1500 mg of l carnitine too much L-Carnitine Dosage Explained: A Complete Guide How Much L-Carnitine Per Day:

L-Carnitine is a naturally occurring amino acid derivative that plays a crucial role in the production of energy by transporting fatty acids into your cells' mitochondria

According to this study therefore, acetyl l-carnitine arginate is almost three and a half times more effective, in terms of neurite growth, than arginine and acetyl l carnitine taken separately

The American Journal Of Clinical Nutrition, 80(3), 539-549

This indicates that opioids might be helping to somewhat rebalance reward and motivation in fibromyalgia patients who are taking opioids, says Martucci

Active principles L-carnitine : amino acid derivative (from lysine and methionine) involved in the use of lipids for energy