Trend Alert: 7 OH Kratom And 7 OH Vape The supply of high potency opioids is expanding through products sold legally as herbal supplements in gas stations, vape shops, and convenience stores. The most prominent is 7 hydroxymitragynine, also known as 7 OH. 7 Oh Hydroxymitragynine Vape PSA: Don't fall for the "natural" hype. We need to talk about 7 OH (7 hydroxymitragynine), a potent psychoactive compound being sold in gummies, candies and liquid shots Coast Guard bans kratom, similar drugs immediately