L Carnitine Dosage for Erectile Dysfunction: What the Evidence Shows and How to Use It Safely 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. LiquiCarn for Dogs and Cats L Carnitine Supplement VetRxDirect CARNITOR (levocarnitine) Oral Solution (1 g per 10 mL multidose)