NOW Supplements, Melatonin 5 MgFREE RADICAL SCAVENGER*: Melatonin is a potent free radical scavenger naturally produced in the pineal gland and present in high amounts in the gastrointestinal tract.* GASTROINTESTINAL SUPPORT*: It is involved in many of the body, brain and glandular biological functions including maintenance of a healthy gastrointestinal lining.* HEALTHY SLEEP CYCLE*: It is involved in many biological functions including regulation of normal sleep wake cycles and