L CARNITINE increases muscle mass, reduces fat mass. Bangkok Hospital Headquarter Supplement of the week: L Carnitine! This one doesn't just boost fat metabolismit can also improve recovery, endurance, and even brain function. If you're serious about performance and longevity, this might be Triple Strength L Carnitine Liquid Fruit Punch (30 Servings) L Carnitine is not a magic fat burner It won't melt fat, build muscle, or replace hard work. The only thing it burns is your money Stick to the basics