The first melatonin diffuser wasn’t introduced until 2016, so there haven't really been any rigorous scientific studies to look at the effects they have on someone's ability to fall asleep and stay asleep.

However, melatonin diffusers are one of the fastest growing diffuser categories. There's plenty of anecdotal evidence, in the form of customer reviews, that point to their effectiveness for people who have trouble sleeping. And, of course, melatonin supplementation in other forms has been used for years as one of the most popular and effective sleep aids.

A melatonin diffuser may be good for stress and anxiety, but the jury is still out. While it may not be the main reason people take melatonin, a few studies suggest it may also have a calming effect and help reduce anxiety, along with helping you fall asleep.

A 2020 review from the National Institutes of Health found that melatonin was effective in helping relieve anxiety in patients undergoing surgery, while a 2017 study echoed those findings for people following acute coronary syndrome (a heart attack, for example). Finally, two 2018 studies found that melatonin was more effective than popular anti-anxiety medications oxazepam and alprazolam in relieving anxiety among people having surgery.

While these studies weren’t about the effects of using a melatonin diffuser specifically, they do speak to melatonin’s ability to possibly help calm anxiety.

As they're a relatively new product, there haven't been any long-term studies that can show definitively whether vaping melatonin or melatonin diffusers themselves are safe or unsafe.

What we do know is that melatonin diffusers like MELO don't contain any of the compounds and chemicals that we know are harmful — like diacetyl or vitamin E acetate — and contain just melatonin and other natural ingredients, along with organic flavoring. Other diffusers may contain ingredients like chamomile extract, L-theanine, or lavender extract. MELO keeps it simple. For more on the safety of “alternative” diffusers like MELO, check out some of our previous articles about healthy alternatives and safest choices available.

We don't recommend that anyone under the age of 18 use MELO products.And you must be 18 or older to order from our website. That being said, just as there aren't many studies that point to a melatonin diffuser's safety in adults, there aren't many that have been conducted on those under 18. What we can say for sure is that no one under 18 should use an e-cigarette or another device containing nicotine, the negative effects of which are well-established.

There's no one right answer to that. Each manufacturer will put different amounts of melatonin in their diffusers. Read the label and follow their instructions for effective use.