When should I take L carnitine? (L Carnitine) COSRX Refresh AHA BHA Vitamin C Lip Plumper 20g Volumizing & Brightening 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 L Carnitine Is it Worth Taking? Ideal Nutrition Page 1 Reviews CosRx, Lip Plump, AHA BHA Vitamin C Lip Plumper, 0.7 oz (20 g) iHerb