L Carnitine vs Pre Workout: Which Supplement Should You Take? How Much L Carnitine Per Day: Expert Guide The Science of Good Health L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe Amazon.com: ProSupps L Carnitine Liquid 3000, Stimulant Free Liquid Shots for Men & Women Clean Workout Drink for Energy, Performance & Muscle Recovery No Sugar, No Carbs 31 Servings, Green Apple : 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 When to take L carnitine: Dosage, forms, and side effects