How Kanna Extract Is Made: From Raw Plant to Standardized Dose (2026)

Kanna extract is made by concentrating the raw plant. Sceletium tortuosum leaf and stem material is processed, usually with a water or solvent extraction, to pull the active mesembrine-type alkaloids out of the plant matter, and the resulting liquid is reduced and dried into a concentrated powder that can then be capped, dissolved into a tincture, or set into a gummy or chew. Every kanna extract, gentle or potent, is some version of that same idea: less plant, more actives per milligram.

Before modern extraction, the plant was prepared by hand: the San and Khoisan peoples of South Africa fermented the crushed plant into kougoed and chewed it. That is authentic but unstandardized. For the traditional-to-modern arc in full, see our kanna preparation methods guide; this page is about how the modern extract itself is produced and, crucially, what its label numbers mean.

Everything starts with Sceletium tortuosum, a succulent in the family Aizoaceae native to South Africa. The raw whole plant is low and variable in total alkaloid content, which is why a traditional serving is measured loosely in the 50 to 400mg range and two scoops are rarely the same strength.

The traditional processing step is fermentation: the crushed plant is bruised and sealed to sweat for a period before drying, producing kougoed (also written channa), which is then chewed as a quid or ground for snuff. Fermentation was believed to change the plant's character, and it does appear to shift the balance of the mesembrine-type alkaloids, which is a real change to the raw material. But a hand-fermented batch is not standardized to anything, so the traditional preparation is authentic and imprecise. Modern extraction exists precisely to replace that variability with a measured, repeatable process.

Modern kanna extract is made by extraction: the alkaloids are drawn out of the plant material into a liquid and then concentrated. In practice that means a water or solvent extraction (water, ethanol, or a similar food-grade solvent) that dissolves the actives out of the milled plant, followed by filtration and evaporation that removes the bulk fiber and reduces the extract down to a concentrated fraction. What is left is far richer in alkaloids per gram than the leaf it came from.

That concentrated fraction is the base for every finished format. Dried to a powder, it can be encapsulated, pressed into quick-dissolve tablets, dissolved into an alcohol or glycerin tincture, or dosed into gummies and chews. The extraction is the step that creates the potency; the packaging is just how that potency gets delivered.

A concentration ratio is the most common number on an extract label. A ratio like 100:1 means roughly 100 parts raw plant were concentrated into 1 part extract. The bigger the first number, the more compressed the extract and the smaller your dose needs to be: a 50:1 is strong, a 100:1 is stronger, and a 200:1 concentrate is measured by the milligram on a scale.

Here is the part most labels do not spell out. A ratio tells you concentration, not potency. Because the raw plant varies in alkaloid content from harvest to harvest, two 100:1 extracts made from different batches of plant can contain different actual amounts of active alkaloid. The ratio is an honest strength signal, but it is an approximation, not a verified figure.

So a ratio alone is useful for one thing: knowing to dose small and carefully. It is not enough, on its own, to compare two extracts fairly or to know what a single milligram delivers. For the full decode of ratios versus percentages, see what is kanna extract.

A standardized extract is manufactured to contain a fixed, stated percentage of active alkaloids, for example "5% total alkaloids" or "3% mesembrine." Unlike a ratio, this is a verified figure that the maker holds constant from batch to batch, which is exactly why it is the more reliable measure of how potent an extract really is. A published per-batch certificate of analysis (COA) is how you confirm the stated percentage is real.

Two percentages carry the meaning. Total alkaloids tells you the overall strength of the active fraction. Mesembrine percentage tells you the character, because as Harvey et al. (2011) documented in the Journal of Ethnopharmacology, kanna works through a dual mechanism: mesembrine is the most potent serotonin-reuptake alkaloid and mesembrenone the strongest PDE4 inhibitor. A high-mesembrine extract reads more stimulating and uplifting; a low-mesembrine, mesembrenone-forward extract reads calmer. The alkaloid mix, not just the total, shapes what you feel.

The practical payoff of standardization is batch-to-batch consistency. When an extract is fixed to a stated percentage of alkaloids, the capsule you buy this month contains the same actives as the one you bought last month. A ratio extract makes no such promise, so its real strength can drift between batches even when the number on the front stays the same.

That consistency is what makes an honest cost per standardized dose computable at all. If you know a serving reliably delivers, say, a fixed amount of standardized extract, you can divide the price by the number of those servings and compare products fairly. With a ratio-only extract, you can compute cost per gram, but not cost per known dose of actives, because the actives per gram are not guaranteed. This is why our best kanna extracts guide ranks products on disclosed alkaloid content and standardization, not on ratio alone.

The clearest example of standardization done deliberately is Zembrin. It is a roughly 2:1 extract standardized to about 0.35 to 0.45% total alkaloids, and it is formulated on purpose to be low in mesembrine and forward in mesembrenone, a calmer, gentler profile than the high-mesembrine concentrates. In other words, Zembrin is not chasing the highest ratio; it is engineered for a consistent, reproducible alkaloid profile, batch after batch.

That deliberate consistency is exactly why Zembrin anchors the clinical literature. Nearly every human study on kanna used Zembrin at a 25mg daily dose. A 3-month placebo-controlled RCT in 37 adults found both 8mg and 25mg daily doses well-tolerated, with no significant changes in vitals or blood chemistry (Nell et al., 2013). Earlier work found a single 25mg dose reduced amygdala reactivity to fearful faces (Terburg et al., 2013, n=16) and that 25mg/day improved cognitive flexibility versus placebo over three weeks (Chiu et al., 2014, n=21). You can only run studies like those on an extract whose potency does not wander, which is the whole point of standardizing it.

For the patented extract in depth, see our Zembrin explainer, and for the alkaloid that sets an extract's character, our guide to mesembrine.

Supplement note: kanna and Zembrin are sold as botanical supplements. These statements have not been evaluated by the FDA, and kanna is not intended to diagnose, treat, cure, or prevent any disease.

The more an extraction concentrates the plant, the more a small dosing error matters, and the more the one mechanism-based caution matters too. Because kanna acts on serotonin much like an SSRI does:

Side effects across extracts are generally mild and more likely at higher doses: headache, nausea, appetite loss, and occasional dizziness or drowsiness. With any ratio extract above about 50:1, a milligram scale is the basic safety equipment. None of this is medical advice; if you take prescription medication or have a health condition, talk to a clinician before trying kanna.