Supports sleep.* Kirkman® offers 3 mg easy to take chewable tablets flavored with refreshing menthol. Free of common allergens. Gluten and casein free. 150 vegetarian capsules. Purity Tested®. Melatonin is a hormone produced in the brain by the pineal gland from serotonin. It is used primarily to support sleep.* It is also commonly used to reduce jet lag.* Low melatonin levels are considered a very common cause of sleeplessness. Several double-blind studies have shown that melatonin supplementation is effective in promoting sleep when melatonin levels are low; however, if an individual takes melatonin when levels are not reduced, then it reportedly has no effect.* For individuals who are deficient in glutathione, melatonin is important because it stimulates the production of glutathione peroxidase.* This versatile nutrient also has powerful antioxidant activity.* In addition, it works to stimulate phosphorylation of pyridoxine in the brain and facilitates the formation of pyridoxal 5-phosphate.* Melatonin may also help in the methylation process, which is important in the body’s absorption and utilization of vitamin B-6.*