L Carnitine has become one of our top 5 sellers the last few years and when you review the research, you can see why. L carnitine is a supplement probably more well known if L Carnitine Benefits, Uses, Dosage, Foods, Side Effects Dr. Axe L carnitine tartrate Carnipure powder 2000 mg per daily dose (1 scoop) 250 g from Unimedica 28531 L carnitine helps transport fatty acids into the mitochondria, where they are used to produce energy, supporting fat metabolism and overall energy levels.