When To Take L Carnitine to Maximise Your Shredding and Beyond BSc Supplements When to Take L Carnitine for Optimal Training Benefits Transparent Labs Levocarnitine Tablets (330 mg) Levocarnitine Oral Solution (1 g 10 mL multiple unit container) Levocarnitine Oral Solution (Sugar Free) (1 g 10 mL multiple unit container) For oral use only. Not for parenteral use. Amazon.com: NOW Foods Supplements, L Carnitine 1,000 mg, Purest Form, Amino Acid, Fitness Support*, 100 Tablets : Health & Household L Carnitine 500mg 60 Tablets Weight Management H&B L Carnitine 1000 mg Tablets Energy & Fat Metabolism Support* NOW Supplements