Kanna Preparation Methods: Traditional to Modern (2026)

Preparing kanna means turning the raw Sceletium tortuosum plant into something you can dose. Traditionally that meant fermenting the crushed plant into kougoed and chewing it; today it usually means buying a standardized extract already measured into a capsule, gummy, tincture, or chew. Every method delivers the same active compounds, the mesembrine-type alkaloids, so the real difference between preparations is not what you get but how predictable the dose is and how fast it arrives.

If you just want the practical version of this, taking a measured dose by the fastest sensible route, see our guide to how to take kanna. This page is about the preparations themselves, where they came from, and what each one costs you in precision.

The oldest and most authentic preparation is kougoed (also spelled kougoed or channa). Sceletium tortuosum is a succulent in the family Aizoaceae native to South Africa, and the San and Khoisan peoples have prepared it for centuries by crushing the plant and then fermenting it, historically by bruising the material and sealing it to sweat for a period before drying.

The fermented product was then used two ways: chewed as a quid, a wad held and worked in the mouth so the juices absorb through the tissue, or dried and ground for use as a snuff. The plant's common names capture the method itself: both kanna and kougoed derive from a word meaning to chew. Europeans first recorded the practice around 1662.

The catch with the traditional preparation is precision. Raw whole-plant material is low and variable in total alkaloid content, and a hand-fermented batch is not standardized to anything, so two quids are rarely the same strength. Authentic, yes; repeatable, no.

Fermentation is the step that makes kougoed kougoed, and traditionally it was believed to change the plant's character, to mellow or transform it into the preparation worth chewing. Chemically, fermentation does appear to shift the balance of the mesembrine-type alkaloids in the plant, which is a real change to the material.

But it's worth being precise about cause. What drives kanna's effects is its alkaloid profile, not the ritual around it. Per Harvey et al. (2011), in the Journal of Ethnopharmacology, kanna acts through a dual mechanism: it's both a serotonin-reuptake inhibitor and a PDE4 inhibitor, with mesembrine the most potent at the serotonin transporter and mesembrenone the strongest PDE4 inhibitor. Whatever a preparation does to the alkaloid ratio is what determines how it feels, fermentation included.

This is exactly why modern standardized extracts matter: instead of hoping a fermentation batch lands in a useful range, a standardized extract states a fixed alkaloid percentage, so the thing that actually drives the effect is measured. For the full mechanism, see the science of Sceletium tortuosum.

Nearly every kanna product sold today starts from an extract, the plant's alkaloids concentrated and, in the best cases, standardized to a stated percentage. The standardized extract is the modern equivalent of a controlled ferment: the patented Zembrin material, for example, is standardized to a fixed total-alkaloid content and is the extract used in the published clinical studies at 25mg/day. Everything below is a way of packaging an extract (or, at the gentle end, raw plant) into a dose.

Standardized extract (capsules). The most predictable preparation: a fixed, disclosed alkaloid content, pre-measured per capsule. Slowest onset because it's swallowed and digested. The default for anyone who wants a known, repeatable dose.

Tinctures. An alcohol or glycerin liquid extract, dosed by the drop and held under the tongue (sublingual) for a faster onset. Gives the finest control, you can titrate a drop at a time, at the cost of kanna's natural bitterness.

Gummies and chews. A measured amount of extract in a flavored piece. Chews and gums are the modern descendant of the traditional quid, part of the dose absorbs buccally, so they come on faster than a swallowed capsule while masking the bitter taste.

Raw and shredded powder. Whole-plant material, the closest modern preparation to the traditional form. Gentle and forgiving but weak and variable, so the dose range is wide and imprecise.

Concentrated powders (50:1, 100:1, high-mesembrine). The opposite extreme: a great deal of plant compressed into very little material, so a dose is only a few milligrams and demands a milligram scale.

For the buy-side rundown of what a standardized extract actually is and which to look for, see what is kanna extract.

Here's every preparation side by side, ranked by the two things that actually differ between them, how much dose control you get and how fast it comes on. Doses are general guidance, not prescriptions.

For most people the answer is a standardized extract at about 25mg, as a capsule, gummy, or chew. It's the only preparation with a fixed, disclosed dose, and 25mg is the exact amount used in the published clinical research: a 3-week randomized trial found 25mg/day improved cognitive flexibility versus placebo (Chiu et al., 2014, n=21), and a 3-month RCT in 37 adults found both 8mg and 25mg daily well-tolerated with no significant changes in vitals or blood chemistry (Nell et al., 2013). Starting from the best-studied dose is simply the sensible move.

Pick by what you value. Want the finest control and a fast onset? A tincture, dosed by the drop. Want speed without the bitterness? A chew, the modern quid. Want the gentlest, most traditional experience and don't mind imprecision? Raw or shredded powder. Chasing a strong effect from very little material? A concentrate, but only with a milligram scale. Our overall picks across every format live in the best kanna you can buy, and if you want the drinkable, gentle route, see kanna tea.

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

No preparation method changes the one precaution that matters most. Because kanna acts on serotonin much like an SSRI does, the headline caution is mechanism-based and applies to kougoed, extract, tincture, gummy, and powder alike:

The honest evidence caveat: the controlled human trials total well under 100 participants, most run only days to three months, and nearly all use the single standardized Zembrin extract, so we can't assume traditional kougoed, raw plant, or high-mesembrine concentrates behave identically. Side effects across preparations are generally mild and more likely at higher doses: headache, nausea, appetite loss, and occasional dizziness or drowsiness. None of this is medical advice, if you take prescription medication or have a health condition, talk to a clinician before trying kanna.