Unproven and Unregulated: The Opioid Risk of 7 Hydroxymitragynine Vapes" Todd Underwood posted on the topic LinkedIn Ban on synthetic kratom in effect in Ohio, but more action could be coming The Statehouse News Bureau 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. FDA and Kratom FDA The Campaign to Ban 7 OH and "Gas Station Drugs" Shouldn't Take Long Filter