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. 510 Battery Vaporizer 7oh Kratom Smoke Tokz Vape Tokz Australia 7 Hydroxymitragynine Vape 7 Oh Disposable Vape CBDfx 1500mg CBD Disposable Vape Pen EDP 7OH Kratom Extract Tablets Strawberry 60mg 3ct (20mg tab) Kures Apothecary 7 Hydroxymitragynine Archives The Provincetown Independent The Campaign to Ban 7 OH and "Gas Station Drugs" Shouldn't Take Long Filter