Melatonin helps increase total sleep time (sleep quality aspect) in people with sleep restriction or altered sleep schedules (e.g. shift work, jet lag). Helps prevent and reduce the effects of jet lag (e.g. falling asleep, sleep quality aspect vs. sleep latency) in people suffering from sleep phase delay syndrome.
Health First's Melatonin Supreme helps restore the body's sleep-wake cycle (aspect of circadian rhythm).