Beyond stress, illness, noise, or the side effects of medications, the number-one hidden cause of sleep problems as we age is a steep decline in your body's natural sleep hormone, melatonin. The latest research suggests that when it comes to taking melatonin supplements, less is more. Clinical studies prove that men and women over 50 need just a small amount of melatonin for a perfect night's sleep. Higher doses overwhelm the melatonin receptors to the point where they become desensitized, causing morning grogginess and 'hangovers.' To help restore your melatonin to youthful levels so you get sound sleep without morning grogginess, a Harvard-educated sleep expert and researcher developed Sleep Answer. Its cutting-edge "capsule-in-capsule" technology delivers two perfect doses of melatonin at the right time. The outer capsule releases the first .3 mg dose of melatonin when you're ready for bed. And since melatonin has a 4-hour half-life, the inner capsule releases another .6 mg dose of melatonin -- assuring that you continue sleeping restfully throughout the night.