Melatonin is a natural hormone that promotes sleep. It is also available as an over-the-counter (OTC) sleep aid. OTC melatonin lasts for between 2.5 and 10 hours, depending on dosage and other factors ...

Add Yahoo as a preferred source to see more of our stories on Google. Melatonin is famous as the hormone that naturally helps us go to sleep. Our bodies usually produce enough to keep us on a normal ...

Melatonin and magnesium are popular sleep aids with distinct mechanisms. Melatonin regulates the sleep-wake cycle, making it effective for circadian rhythm disorders like jet lag. It can reduce sleep ...

Adults with insomnia who took this sleep supplement regularly for at least a year had almost double the risk of heart failure, a new study found. A recent study linked long-term use of melatonin ...