L Carnitine Dosage for Erectile Dysfunction: What the Evidence Shows and How to Use It Safely Acetyl L Carnitine Dosage for Erectile Dysfunction Acetyl L Carnitine (ALCAR) Supplement for Horses Mad Barn 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.