The hormone melatonin is produced by the body. Melatonin 10mg uk comes entirely from nature. In reaction to darkness, your brain naturally creates melatonin. It assists in regulating your circadian rhythms, which are often referred to as your internal 24-hour clock. Night time light exposure may prevent the generation of melatonin. Melatonin supplements may be helpful for a number of ailments and circumstances, including anxiety before and after surgery, some sleep abnormalities in children, and delayed sleep-wake phase disorder. Although it may be used to treat a variety of diseases, melatonin is particularly helpful for those over 55 who suffer from insomnia.