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. The Campaign to Ban 7 OH and "Gas Station Drugs" Shouldn't Take Long Filter Ban on synthetic kratom in effect in Ohio, but more action could be coming The Statehouse News Bureau FDA and Kratom FDA 7 O'Heaven 7 OH Kratom Vape Pen Blueberry Fast & Potent