Whether you experience occasional sleeplessness, jet lag, or are just looking to improve your quality of rest, Nature's Bounty Melatonin 10mg Twin Pack may help.* Nature's Bounty Melatonin is a hormone in your body that regulates your sleep cycle. Since lack of sound rest can have negative side effects, taking a melatonin supplement can help you fall asleep faster and stay asleep longer.* The 100% drug-free sleep aid contains 10 mg of melatonin per serving, so take one capsule at bedtime to awaken feeling refreshed and revitalized.*