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 Products Banned in Florida Smoke Shops: Full Breakdown PainCrusher Rx 7 Oh 2 Gram Disposable Vape Cloud Nine Shoppe Scientists say it's stronger than morphine. It's on sale over the counter. Kratom and 7 OH in Oklahoma: Is the opiate like substance dangerous? California Takes On Potent Synthetic Drug 7 OH KQED