View Natural Sources Of Melatonin For Sleep US. Source naturals melatonin is produced in humans by the pineal gland. Here's what you need to melatonin sleep aids are growing in popularity, with 3 million americans using them in 2012, according to a nationwide survey from the centers for disease.
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Source naturals melatonin is produced in humans by the pineal gland. Source naturals melatonin is produced in humans by the pineal gland. Twenty percent of adults in the u.s. A favorite of travelers, it helps support restful sleep.