Green oat source is a plant which is a source of active ingredients such as alkaloids, flavonoids, trace elements in the form of mineral salts (soluble silica and calcium), saponins, steroid compounds. Use of preparations from green oats contributes to the functioning of the central nervous system, is sedative and soporific and stimulates metabolism. Green oats is part of a nutritional and functional supplements used as a diet complementat for physically active people and athletes. Available inter alia as supplement Avena sativa extract.