Bolt Liquid L Carnitine 3000mg Weight Management Why Take Carnitine? NOW Foods Amazon.com: Super Strength L Carnitine 1000mg Servings Plus Calcium for Boosted Metabolism and Improved Muscle Gain Arazo Nutrition : Health & Household 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 Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe