Melatonin is the natural hormone that the body produces to regulate its internal "clock." The secretion of melatonin is triggered by the dark and is suppressed by natural daylight, therefore controlling periods of sleepiness and wakefulness. However, melatonin is more than a "sleeping pill". It can also strengthen the immune system. It works in concert with vitamin B6 and zinc, for instance, to reverse the decline of the immune system that comes with advancing age. In addition, melatonin has strong antioxidant activity and, as such, it supports the hormonal and metabolic networks in the body. These networks undergo additional changes due to intense physical exercise, mental and emotional stress, or even poor nutrition. Some evidence suggests that melatonin may, in fact, lighten and enhance one's mood considerably. Melatonin is also reported to have a role in improving women's health problems, such as osteoporosis and premenstrual syndrome.

Available in 60 capsule bottles.