Search “what is stronger than kratom” and you’ll get a firehose of half-answers: vendor marketing, forum war stories, and chemistry fragments from three different studies stitched together. This post tries to be the straight version: what “stronger” can even mean for kratom-adjacent products, where 7-OH sits in that conversation, and how to read the labels that drive most of the confusion.
First, what “stronger” can mean
There are three different things people mean, and mixing them up is the source of most bad claims:
- Per-milligram potency at the receptor. How strongly a compound binds and acts at opioid receptors. On this axis, 7-hydroxymitragynine is generally described as more potent than mitragynine, the leaf’s main alkaloid — which is the core fact behind the entire 7-OH category.
- Per-gram concentration of material. A leaf is mostly plant fiber and dozens of minor compounds; an extract concentrates the target alkaloid. A 7-OH tablet is an extract: the active compound is the product, in a printed milligram amount.
- Per-serving effect. The thing users actually feel. This depends on dose, tolerance, body, and day — no compound comparison chart captures it, and nobody claiming an exact ratio is measuring it on you.
When a seller says “X times stronger than kratom,” ask which of the three they mean. Usually it’s (1) dressed up as (3).
Where the other alkaloids sit
Beyond mitragynine and 7-hydroxymitragynine, Mitragyna speciosa makes several other alkaloids — 19-hydroxymitragynine, 7-OH’s close neighbors, and a long tail of minor ones. In practical market terms:
- Raw leaf / powder: mitragynine-dominant. The baseline experience, dosed in grams, variable batch to batch.
- General extracts (“10:1”, “20:1” ratios): concentrated whole-alkaloid blends. The ratio tells you the leaf-to-extract processing, not the exact 7-OH content — check the COA if a ratio claim is all you get.
- 7-OH isolates / tablets: 7-hydroxymitragynine is the labeled, measured dominant compound. This is the format where “stronger” becomes a precise, verifiable statement: the label says 50mg or 100mg of the more potent alkaloid, and the lab report should back it per batch.
On per-milligram receptor potency, the plain-language consensus in the literature and in how the industry labels products is that 7-OH is the stronger of the two headline alkaloids. We don’t publish “times stronger” numbers ourselves, because any such ratio depends on the comparison dose and the study, and vendor-published multipliers are marketing, not measurement.
Why the stronger option carries a bigger responsibility
More potent per milligram means smaller, more precise doses and a steeper reason to verify them. It also means the responsible-use rules matter more: no mixing with other depressants, no driving or machinery after use, 21+ only, and an honest break-schedule for regular users — see our responsible use guide and tolerance & breaks post. And it’s legal exposure that scales with the category: 7-OH specifically is restricted or banned in several states in 2026, so the “strongest” option is also the one that most demands a state-by-state legal check before purchase.
The practical takeaway
If “stronger than kratom” means the more potent alkaloid in a precise, lab-verified dose, the answer in today’s market is 7-OH in tablet or chewable form — and the quality gap between vendors is entirely in the paperwork (batch COAs, honest mg labels) and the policy (21+, legal shipping). If you want the traditional whole-plant format instead, leaf and mitragynine-dominant products remain what they’ve always been. Both are adult products; neither is medicine; and the difference between a 50mg and 100mg 7-OH tablet is real, so choose deliberately with our strength guide. The quick answers are in the FAQ center, and the shop carries both lines — 21+, and check your local laws first.