Overall melatonin use is relatively low among U.S. adults.
At least 27,795 children required medical care over the course of the decade, while two children died.
How Does Melatonin Work?

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Melatonin is a hormone that helps us fall asleep faster.
Melatonin is actually not a very potent hypnotic and may only help with certain sleep disturbances.
OTC vs. For the most part, melatonin checks all these boxes, Deubry said.
This OTC classification could shift though as the use of melatonin dramatically increases.
He also suggested limiting your exposure to blue light from electronic devices at night.
2017;13(2):307-349. doi:10.5664/jcsm.6470