Melatonin

Melatonin is a sleep regulating hormone made by the pineal gland. For most people, all it takes to restore melatonin to normal levels is 1/3 mg. The usual dose you find in stores, however, is 3 mg, which is 10 times the level needed. The exceptions? Early evidence suggests that a 5 to 6 mg dose may help decrease acid reflux while sleeping.