TrueZZZ contains the natural sleep hormone, melatonin, which we produce while we sleep—it helps us to get our ZZZs. Its production is suppressed by the presence of light, so it is best to sleep in complete darkness for optimal melatonin production. Secreted by the pineal gland in the brain, melatonin regulates our biological clock. Research has shown that melatonin facilitates sleep. It is also a potent antioxidant and helps to combat the negative effects of the stress hormone, cortisol. Melatonin has been shown to significantly shorten the time needed to fall asleep, reduce the number of night awakenings and improve sleep quality. Melatonin may also relieve symptoms of jet lag. Very recent studies have also found that it may assist with high blood pressure.