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 Acetyl L Carnitine: Benefits, Forms, Dosing, and Side Effects Dr Brad Stanfield L Carnitine: Benefits, Uses, Side Effects, and More L Carnitine: Benefits, Uses, Side Effects, and More Govinda Lifecare L Carnitine and L Arginine Tablets Manufacturer and Supplier in India L carnitine is a naturally occurring amino acid structure that is made in the human brain, liver, and kidneys. L carnitine plays a critical role in energy production, as it converts fat into energy.