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A new understand is now emerging that greater health benefits of melatonin supplementation are associated with increased duration of REM and deep sleep, crucial for nightly repair, regeneration and detoxification. Beyond sleep, research (over 6000 studies) shows that melatonin benefits are profound and far reaching. Known as the bodyâs most efficient free-radical scavenger with an impressive ability to control oxidative damage, melatonin has powerful antioxidant, anti-inflammatory and immune properties.
1 For trouble falling asleep: 0.3 to 5 mg of melatonin daily for up to 9 months has been used.  For sleeping problems in people with sleep-wake cycle disturbances: 2 mg to 12 mg taken at bedtime for up to 4 weeks has been used.