While driving past corner vape shops and quick stops, you might have seen noticed an advertisement for kratom. But what is kratom? Read more about the new substance on the rise here: FDA Pushes to Classify 7 OH Sold in Vape Shops as Illicit Drug Ecigator 7 OH kratom is fueling addictions across the Philly region Kratom vapes? A Waste of time. Lets break it down: Kratom's active properties become inactive at around 200F. But when you're vaping? That heating element cranks up to 400F or more.