This Natrol product offers a high 10mg dose of melatonin with a time-release mechanism, aiming to help users both fall asleep and stay asleep throughout the night. This sustained release can be beneficial for individuals experiencing middle-of-the-night awakenings. The inclusion of Vitamin B6 (10mg) further supports natural melatonin production, and calcium is also present, though its direct impact on sleep is less pronounced at this dose. While the 10mg melatonin dose is high and should be approached with caution, the time-release feature mitigates some concerns about next-day grogginess compared to immediate-release high doses. The review count is relatively low for Natrol, a popular brand.