What Is 7 Hydroxymitragynine & Why Is It Dangerous? Mountainside TC FDA and Kratom FDA Today, we announced the issuance of seven warning letters to companies illegally marketing products containing 7 hydroxymitragynine (7 OH). https: www.fda.gov news events press announcements fda issues warning letters firms marketing products 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 Operation Vape Trail' cracks down on synthetic marijuana, 7 OH, kratom, more 7 Oh Mitragynine Vape What is 7 OH? 7 OH stands for 7 Hydroxymitragynine. It is a strong chemical found in very small amounts in the kratom plant. Some products sold in stores have much