L Carnitine Nadara Clinic 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. When to take L carnitine: Dosage, forms, and side effects L Carnitine Dosage for Erectile Dysfunction Is L Carnitine safe for athletes at doses up to 6000 mg day? Consensus L Carnitine Dosage for Erectile Dysfunction