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. 7 hydroxymitragynine Side Effects 7 Hydroxy Kratom Vapes Natrlicher Geschmack 7 Hydroxymitragynine Tablets Potency 7 OH 7 Hydroxy Dsposable Vape Blueberry 1ml Australia 7 Oh Vape Swipe through to learn about 7 OH (7 hydroxymitragynine), a potent psychoactive compound found in the Kratom plant. As we move past the peaks of RX pills and fentanyl, 7 OH is emerging as a