Melatonin Sustain Melatonin, Magnesium, Vitamin B-6 Sustained Release Tablets Melatonin is a hormone secreted by the pineal gland that aids biorhythm regulation. Biorhythm is disturbed by stress, crossing time zones and changing work shifts. Melatonin production also declines with age. Vitamin B6 aids melatonin metabolism.
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