Natrul Health Melatonin 1mg Sleep Aid Tablets used for sleep disorders jet lag and to regulate circadian rhythms. Melatonin supports healthy sleep patterns. The body naturally releases melatonin in response to changes in light, with melatonin levels rising at night. It is in this way that melatonin helps promote sleep. No yeast, wheat, corn, milk, egg, soy, glutens, artificial colors, added sugar, starch, preservatives or animal derivatives.