7-Hydroxymitragynine — the concentrate crisis.
Direct answer
7-OH is a highly concentrated kratom alkaloid — typically 13× more potent than mitragynine at opioid receptors. Isolated 7-OH products (shots, tablets, tinctures) are orders of magnitude stronger than leaf kratom and behave pharmacologically like opioids. The FDA is actively enforcing against them, while explicitly preserving legality for leaf kratom.
Medically reviewed by Dr. Irvine Russell · Updated April 2026
Leaf kratom vs isolated 7-OH
| Attribute | Leaf kratom | Isolated 7-OH |
|---|---|---|
| 7-OH content | < 0.02% by weight | 5–30mg+ isolated per serving |
| Relative potency | Baseline | 13× higher at mu-opioid receptors |
| Tolerance & dependence | Develops over 1–2 weeks of daily use | Develops in days; severe withdrawal |
| Overdose risk | Low (leaf alone); rises with polydrug use | Significantly elevated |
| FDA stance | Not targeted · considered botanical | Warning letters · scheduling intent |
| AKA position | Supports via KCPA | Opposes isolated/concentrated 7-OH |
Enforcement timeline
FDA Warning Letters
FDA issued warning letters to 7 firms marketing isolated 7-hydroxymitragynine products and announced intent to restrict 7-OH as a controlled substance.
DEA Notice of Intent
DEA publishes notice of intent to schedule 7-OH. Public comment period opens.
Congressional Briefing
AKA and Kratom Trade Association testify before House Energy & Commerce subcommittee — advocating for leaf kratom and against 7-OH concentrates.
State-level activity
Oklahoma, Colorado, and Tennessee introduce bills specifically targeting 7-OH products while explicitly protecting noble leaf kratom.
7-OH product watchlist
The following brands have been identified as marketing isolated or semi-synthetic 7-OH products. These are not leaf kratom. Avoid if you want to stay within the leaf-kratom category.
OPMS Gold Shot
Isolated 7-OH product
MIT45 Super K Extra
Isolated 7-OH product
Hydroxie
Isolated 7-OH product
Plugged In
Isolated 7-OH product
O.P.M.S. Black
Isolated 7-OH product
K Shot Extreme
Isolated 7-OH product
7Hydroxy Labs
Isolated 7-OH product
If you are using 7-OH products
Tapering from isolated 7-OH is significantly harder than tapering from leaf kratom. Withdrawal mimics opioid withdrawal. Seek medical supervision and taper by 10–20% per week rather than the 0.5g cadence used for leaf taper. Do not switch to leaf kratom as a crutch — you are likely trading one dependency for another.
Safety guide · tapering protocol →FAQ
What is 7-hydroxymitragynine?
7-hydroxymitragynine (7-OH) is a minor alkaloid in kratom leaves, typically present at less than 0.02% by weight. It has roughly 13x the potency of mitragynine at mu-opioid receptors. Isolated or semi-synthetic 7-OH products are orders of magnitude more concentrated than leaf kratom.
Is 7-OH the same as leaf kratom?
No. Leaf kratom contains ~0.02% 7-OH in its natural alkaloid spectrum. Commercial 7-OH tablets, tinctures, and shots contain between 5mg and 30mg of isolated 7-OH per serving — equivalent to eating hundreds of grams of leaf kratom. They behave pharmacologically more like opioids than botanicals.
Why is the FDA targeting 7-OH?
Isolated 7-OH has sharply higher abuse potential, tolerance, and dependence than leaf kratom. Case reports link it to overdoses and severe withdrawal. The FDA has also raised concerns about semi-synthesis — some products are made via chemical oxidation of mitragynine, which is legally closer to a new drug than a botanical extract.
Is 7-OH legal right now?
As of April 2026, 7-OH is not federally scheduled but sits in legal limbo. The FDA considers isolated 7-OH an unapproved new drug; products are being pulled from shelves via warning letters. Some states have begun bans specifically targeting 7-OH while preserving leaf kratom legality.
How do I know if a product contains 7-OH?
Read the label. Leaf kratom is labeled by vein color and mitragynine %. 7-OH products explicitly list "7-OH" or "7-hydroxymitragynine" with a mg-per-serving dose. Brand names to watch for (all 7-OH): OPMS Gold Shot, MIT45 Super K Extra, Hydroxie, Plugged In shots. If unsure, do not buy.