Losing weight with L carnitine supplements. Yes or no? Carnitine: the claims and why it may not work 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 The Science of Carnitine: How It Works and Why It Matters L Carnitine Tartrate Does It Help Burn Fat? AS IT IS Nutrition Acetyl L Carnitine VS L Carnitine: Which is Better?