Force Factor L Carnitine Supplement, Liquid L Carnitine 3000 mg to Help Turn Fat Into Energy, Studies that examine the effects of L carnitine in recovery after Download Table When to take L carnitine: Dosage, forms, and side effects 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. L Carnitine Vitamin Supplement for Energy and Metabolism Boost