s Bounty Dual Spectrum Melatonin tablet has two layers: a quick release and extended release. Whether a busy schedule or exercise routines are preventing you from relaxing and getting a restful night sleep, melatonin may be the drug free solution for occasional sleeplessness. ISR technology ensures the quick release portion delivers a quick and effective release of ingredients while the extended release portion releases over the course of several hours. Melatonin is a hormone naturally found in the body | Combines a quick release and a time release layer | Supports rest and relaxation to aid with occasional sleeplessness | Nutritionally supports sound sleep | These statements have not been evaluated by the Food and Drug Administration | Packaging may vary due to new packaging updates, same great product | During the summer months products may arrive warm but Amazon stores and ships products in accordance with manufacturers' recommendations, when provided.