L Carnitine: The Energy Booster Your Body Loves Turn fat into fuel and power up your recovery with one of our favorite performance vitamins. Boosts metabolism & fat burning 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 Acetyl L Carnitine vs L Carnitine: 4 Key Differences Momentous LCarnitine Liquid 3000 mg Fast Absorbing Energy Support Muscleology Muscleology Sports Nutrition