Did you know L carnitine, a vital amino acid, is naturally produced by your body and found in various foods? While acetyl L carnitine (ALCAR) can be a beneficial supplement for some, most people get Doctor's Best Acetyl L Carnitine, 500 mg, 60 Veggie Caps Losing weight with L carnitine supplements. Yes or no? Acetyl L Carnitine HCL 500mg per serving 180 Capsules When to Take L Carnitine for Optimal Training Benefits Transparent Labs