The Pros and Cons of Using Kratom Vape Apotheca 7 Oh Vape Canada 7 O'Heaven 7 OH Kratom Vape Pen Fruit Punch Fast & Potent 7 Oh Heaven Vape Everyone should beware of the dangers of 7 OH. Thank you, Montana Attorney General Austin Knudsen, for sounding the alarm. 7OH Vape: What You Need To Know Brooks Healing Center Doctors are warning about a substance they call gas station heroin that is available over the counter at vape stores across Arizona. The product is called 7 OH, a component derived from kratom.