Melatonin is a hormone produced by the pineal gland of mammals and reaches peak levels at night. Studies show that it may be associated with the regulation of the sleep/wake cycles.* Melatonin is a potent antioxidant that defends against free radicals and helps to support glutathione activity in the neural tissue.* When dissolved in the mouth, melatonin may go directly to the brain and bypass the liver causing it to work quickly and effectively.*.