Herbatonin is the world’s first plant melatonin (phyto-melatonin) made from unique varieties of rice, alfalfa and chlorella all in a vegan capsule. All other melatonin on the market is from synthetic or animal sources. This 0.3mg dose of melatonin is the physiological dose that your pineal gland naturally produces each day to support a safe, restful night's sleep.