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 L Carnitine vs L Arginine: Understanding Their Differences and Benefit Fitness Health L Carnitine Liquid Benefits Explained: A Guide The Science of Good Health Carnitine Heart and brain health Life Extension Europe L Carnitine Complex 2200mg 180 High Strength Vegan Capsules 1.5 Month Supply