7-OH (7-hydroxymitragynine) occurs naturally in the kratom plant, but only in trace amounts — less than 2% of the leaf's alkaloids. The products drawing regulatory fire aren't leaf; they're concentrated or semi-synthetic isolates engineered to deliver far more 7-OH than nature ever does.
That matters because 7-OH binds the brain's mu-opioid receptors more potently than morphine. Sold as fast-dissolving tablets, gummies, and liquid shots, it can produce an intense, short, opioid-like high that encourages compulsive redosing — the same loop that drives other opioid addictions.
The marketing — “natural,” “herbal,” sitting by the register — hides a pharmacology that behaves like a serious drug. The FDA now describes concentrated 7-OH as an unapproved, adulterated product and has moved to seize it.