Melatonin is a hormone that helps regulate your sleep and wake cycles. Many people take it in supplement form to ease insomnia, jet lag, or other sleep issues. In fact, melatonin use has grown fivefold over the past two decades.
But can it expire? Some bottles include a clear expiration date, while others do not. Research is still ongoing, but using expired melatonin may not be as effective—or possibly safe. |
