In case you’ve ever had hassle falling asleep, odds are you’ve heard about (or tried) melatonin as a way to resolve your insomnia. There are a multitude of ways to consume the sleep aid — from pills, to gummies. But melatonin diffusers, additionally known as vape pens, are the latest additions to the arsenal of products promising better shut-eye. The first melatonin vape was launched only 5 years ago. Because they’re so new, there aren’t many research on the effects…