L CARNITINE L carnitine carnipure sport supplement 120 capsules L Carnitine, 500 mg, 30 vegetarian capsules L Carnitine injection is recommended at 1 ampule every 2 3 days for best results. The L Carnitine is taken intravenously either by normal injection or using a butterfly needle. After taking this L Carnitine, you Amazon.com: Designs for Health Acetyl L Carnitine Capsules 800mg Energizing Brain Support Non GMO, Vegetarian Acetyl L Carnitine HCl Supplement (90 Capsules) : Health & Household L Carnitine Dosage for Erectile Dysfunction: What the Evidence Shows and How to Use It Safely