The Kanna Glossary

Kanna comes with a lot of jargon — mesembrine, Zembrin, total alkaloids, full-spectrum. Here's every term that matters, defined in plain English and kept consistent with our guides. 32 terms, free to read and free to cite.

The plant

Channa: An alternate common name and spelling for kanna (Sceletium tortuosum), used interchangeably in some regions and product listings.
Fermentation: The traditional processing step in which harvested kanna is crushed and left to ferment, which alters its alkaloid profile. Many modern extracts skip or standardize this step.
Kanna: The common name for Sceletium tortuosum, a small succulent plant native to South Africa, traditionally chewed, fermented, or brewed for its mild mood-lifting and calming effects. Also spelled 'channa' or 'kougoed.'
Kougoed: The traditional South African name (also spelled 'kauwgoed,' meaning 'something to chew') for fermented kanna. The fermentation step is part of the centuries-old preparation by the San and Khoikhoi peoples.
Sceletium tortuosum: The botanical (scientific) name for kanna. 'Sceletium' refers to the skeleton-like leaf veins that remain after the leaf dries; 'tortuosum' means twisted, describing the plant's sprawling stems.

The chemistry

Alkaloid: A naturally occurring nitrogen-containing plant compound that is biologically active. Kanna's effects come from a group of mesembrine-type alkaloids; the 'total alkaloid' percentage is a key potency measure.
Dual mechanism: Kanna's defining pharmacology: it inhibits serotonin reuptake and PDE4 simultaneously, documented in lab research (Harvey et al., 2011). This combination sets kanna apart from most single-action botanicals.
Mesembrenol: One of kanna's supporting alkaloids, present in smaller amounts. It contributes to the plant's overall full-spectrum profile rather than driving the main effect.
Mesembrenone: A kanna alkaloid that is a strong PDE4 inhibitor (and also serotonin-active). It is associated with the clearer-headed, calmer, more cognitive side of kanna's effect profile.
Mesembrine: The most studied and typically most abundant alkaloid in kanna. It acts as a serotonin-reuptake inhibitor (SRI), the mechanism most associated with kanna's mood-lifting, uplifting side.
PDE4 inhibitor: A compound that blocks the enzyme phosphodiesterase-4, a mechanism linked to cognition and mood. Kanna acts as both an SRI and a PDE4 inhibitor at once — its distinctive 'dual mechanism.'
Serotonin: A neurotransmitter involved in mood, calm, and wellbeing. Kanna raises serotonin activity, which is central to both its appeal and its main safety caution.
Serotonin-reuptake inhibitor (SRI): A compound that slows the brain's reabsorption of serotonin, leaving more available. Kanna's mesembrine works this way — the same broad mechanism as SSRI antidepressants, which is why kanna and antidepressants shouldn't be combined without medical advice.
Total alkaloids: The combined percentage of all active alkaloids in a kanna product, a standard potency label. A stated total-alkaloid figure (e.g. 5%) is far more useful than a vague 'proprietary blend.'

Products & formats

100x extract: A ratio-based concentrate where 100 units of raw plant are reduced to 1 unit of extract. A ratio tells you concentration but not a standardized alkaloid percentage, so it's measured carefully — usually with a milligram scale.
Certificate of Analysis (COA): A third-party lab report confirming a product's alkaloid content and screening for contaminants. A published, batch-matched COA is the single best trust signal when buying kanna.
Cost per standardized dose: The price of one effective, comparable dose — not the sticker price of the package. It's the honest way to compare kanna products of different sizes and potencies, and the metric we rank on.
Full-spectrum extract: An extract that preserves the plant's natural ratio of all alkaloids rather than isolating one. A standardized full-spectrum extract aims to keep the whole profile while locking it to a known potency.
Kanna gum / chews: Pre-dosed chewable kanna products that echo the traditional 'chewing' preparation. They remove the need to measure and typically disclose a per-piece dose.
MT55: A high-mesembrine kanna concentrate (around 5%+ total alkaloids) sold by some specialist vendors. Potent and for experienced users who measure by the milligram.
Raw whole-plant: Unconcentrated, dried kanna plant material (powder or shredded leaf), the most traditional form. Its potency varies plant to plant, so doses span a wide range (roughly 50–400 mg).
Standardized extract: A kanna extract processed to a guaranteed, consistent alkaloid potency (e.g. '3% mesembrine'). Standardization is what lets you take a predictable dose every time, instead of guessing.
Sublingual: Taken under the tongue, where compounds absorb directly into the bloodstream through the tissue. This is why kanna tinctures act faster than swallowed capsules.
Tincture: A liquid kanna extract taken under the tongue (sublingually). Tinctures come on faster than capsules (roughly 15–40 minutes) and let you build your dose drop by drop.
Zembrin: A patented, standardized kanna extract used in essentially all of kanna's published human clinical research. It has a deliberately low-mesembrine, mesembrenone-forward profile and a defined total-alkaloid range; the studied dose is 25 mg/day.

Effects & safety

Empathogen: A substance that promotes feelings of emotional openness and connection. Kanna is sometimes described as gently empathogenic at higher doses, though far milder than classic empathogens.
Microdose: A very small dose taken for a subtle, clear-headed lift rather than a strong effect. With kanna, microdosing usually means the low end of a standardized format.
Onset: The time between taking kanna and feeling it: roughly 15–40 minutes for a sublingual tincture and 30–60 minutes for capsules, gummies, or powder taken by mouth.
Serotonin syndrome: A potentially serious condition caused by too much serotonin activity, usually from combining serotonin-raising substances. Because kanna raises serotonin, it should not be combined with SSRIs, SNRIs, MAOIs, or other serotonergic drugs without medical advice.
Titrate: To adjust your dose gradually — starting low and increasing slowly over time — to find the smallest amount that works for you. Tinctures make titrating easy because you can add a drop at a time.
Tolerance: The tendency for a given dose to feel weaker with frequent use. A short break typically resets kanna tolerance so a smaller amount works again.
Uplift vs calm: Kanna's dose-dependent pattern: lower or mesembrenone-forward doses tend toward calm, clear-headed focus, while higher or mesembrine-forward doses lean more uplifting and stimulating.

New to all this? Start with what is kanna, how kanna works, or the dosage calculator.

Educational reference only, not medical advice. Kanna is a botanical supplement that has not been evaluated by the FDA to treat any condition, and it raises serotonin — do not combine it with SSRIs, SNRIs, MAOIs, or other serotonergic medications without medical advice.