| Section2 = }} Creatine's a nitrogenous organic acid that occurs naturally in vertebrates and helps to supply energy to muscle. Creatine was identified in 1832 when Michel Eugène Chevreul discovered it as a component of skeletal muscle, which he later named creatine after the Greek word for flesh, Kreas. Biosynthesis In humans and animals, approximately half of stored creatine originates from food (mainly from fresh meat). Since vegetables don't contain creatine, vegetarians show lower le… (More on Creatine)