Supplements don't replace the workbut they can support it L Carnitine helps your body turn fat into usable energy, so you can push harder and recover better. Consistency first. Supplements second. Results Ratiopharm L Carnitine 45 gram Weight Loss and Fat Loss Injection Effectiveness varies: L carnitine may help with fat metabolism, but it's not a magic weight loss pilldiet and exercise still matter most. Forms matter: Regular L carnitine general use Acetyl L carnitine brain & energy L Carnitine 1 G 100 C by Olympia Labs Austin Medical L Carnitine for Weight Loss: Does It Really Work? Benefits, Dosage & Results