Carnitine in its natural 'L' form (not synthetic D-Carnitine) Coated caplet food supplement 500mg Suitable for vegetarians and vegans Carnitine has several functions, one of which is to transfer fat to the mitochondria. Carnitine is made in the liver and kidneys, then stored in the skeletal muscles, heart, brain and sperm. Red meat and dairy produce are the main sources of carnitine in the diet. Holland & Barrett provides Carnitine in its natural 'L' form; (not synthetic D-Carnitine)