Melatonin, additionally referred to synthetically as N-acetyl-5-methoxytryptamine. Is a characteristic hormone made by our body from serotonin and discharged by the pineal gland. The pineal gland is a little endocrine gland found simply over the center of the cerebrum. During the day this gland is idle, and when darkness happens it turns dynamic and starts delivering melatonin. Melatonin controls the sleepiness and alertness.