Corpmine NOW Supplements, Melatonin 5 mg, Sustained Release, Formulated for a 4-Hour Melatonin is a potent free radical scavenger naturally produced in the pineal gland and present in high amounts in the gastrointestinal tract.* It is involved in many of the body, brain and glandular biological functions including regulation of normal sleep/wake cycles, regulation of the immune system and maintenance of a healthy gastrointestinal lining.* NOW Melatonin Sustained Release Tablets allow for steady release and more gradual, sustained utilization. This sustained release tablet is formulated to release over a 4-hour period. Natural color variation may occur in this product. Features: Healthy Sleep Cycle* Gastrointestinal Support* Non-GMO & Vegan GMP Quality Assured: NPA A-rated GMP certification means that every aspect of the NOW manufacturing process has been examined, including our laboratory/testing methods (for stability, potency, and product formulation). Packaged in the USA by a family owned and operated company since 1968 Payment All payments are processed through PayPal and give you; the buyer protection on your purchase. Shipping All items ship out as fast as possible from multiple warehouses around the country. Most items are delivered within 3 business days. Returns We offer simple and easy returns on almost all items within 30 days of delivery. Contact us for a return authorization and address to ship your item to. © Copyright - Corpmine