It may make you drowsy, especially the 'sleepy time' green tea flavor which has valerian root and melatonin.
FWIW, I love the stuff and do vape Pear Lung juice all day at home. But I stick to other flavors while at work
Whaaa? I hadn't heard of this!
I've suffered from insomnia to one degree or another for twenty of my twenty-six years. I actually have a little bottle of melatonin tablets on my bedside table that help me sleep.
I know Drew says that his products are not intended to treat, cure, diagnose, etc etc etc, but if this does help, I'll be yet another Nhaler fangirl.
And Packl is right, vaping something all day that has melatonin in it would not only make you sleepy all day but could actually increase your tolerance to it, which would make it more difficult to fall asleep when you want to.