Kanna and Cannabis: What People Report When They Combine Them

TL;DR: People combine kanna and cannabis constantly, and the reports fall into a few clear buckets: a warmer, chattier high; less couch lock at low kanna doses; more anxiety or spinning at high doses of both; and stronger effects from the cannabis than expected. There is no published study on the combination. Healing Herbals does not sell cannabis or any THC product. If you try the two together, use a small kanna dose, take it sublingually before you smoke rather than burning it, and keep the cannabis dose lower than usual.

We get asked about this pairing every week. It is one of the most searched kanna combinations, and it shows up in reviews of nearly every product in our kanna extract collection. So here is a straight rundown of what people say happens, what nobody knows, and where we stand on it.

One thing up front: we do not sell cannabis, THC, hemp flower or any cannabinoid product. This post is about what customers and community members report, not a recommendation.

Why people put them together

Kanna has a long history as a chewed and smoked plant in South Africa, and early written accounts describe it being mixed with other herbs. Modern users picked that back up. In the kanna community, cannabis is probably the second most common pairing after coffee, and the reasoning people give is usually one of three things:

• They want the sociable, open feeling of kanna without losing the body relaxation of cannabis.
• They find cannabis alone makes them anxious or withdrawn and hope kanna balances that.
• They are trying to cut down on cannabis and use kanna to fill the gap, which we covered in our herbal alternatives post.

What people report, the good

A more social high. This is the most frequent report by far. People describe cannabis making them quiet or stuck in their own head, and a low kanna dose beforehand turning that into an easy, talkative mood. The word "warm" comes up a lot.

Less couch lock. Users who take a high mesembrine extract before an indica leaning strain describe staying more upright and engaged. Some say it feels like the cannabis got shifted toward a daytime profile.

Music and sensation. Reports of music sounding richer and touch feeling more pleasant are common with kanna on its own, and people say cannabis amplifies that. We wrote about the solo version in our music and art post.

Cannabis feels stronger. A lot of people say a normal amount of cannabis hits harder with kanna in the system. Whether that is a real pharmacological effect or just kanna making people more sensitive to how they feel, nobody has measured it. Either way, it is why we tell people to lower their cannabis dose the first time.

What people report, the bad

Anxiety and racing thoughts. This is the main negative. It almost always involves a high dose of both, usually a mesembrine heavy extract and a strong THC product. People describe a fast heart rate, looping thoughts and a feeling of being pulled two directions at once. Cannabis already produces anxiety in a share of users, and adding a stimulating extract on top does not help those people.

Dizziness and nausea. Kanna at high doses can cause nausea on its own, and so can cannabis. Together the reports of "greening out" get more frequent. Chewing the plant or swallowing a large dose of extract seems to be a bigger trigger than a sublingual spray.

Headache the next day. Some users describe a dull headache after a heavy session of both. Hydration and a lower dose seem to be the fixes people land on.

Blunted cannabis. A minority say the opposite of "stronger": that kanna made the cannabis feel flat or short. This is usually reported with high mesembrenone extracts rather than mesembrine ones.

What is actually known

Not much. There is no published human or animal study on kanna combined with cannabis. The Operation Supplement Safety program, which reviews supplements for US service members, says plainly that it is unknown what side effects might occur when kanna is used recreationally rather than as a supplement, especially combined with cannabis or other psychoactive substances.

What we do know is how each behaves alone. A review in the Journal of Ethnopharmacology describes Sceletium alkaloids as phosphodiesterase 4 and serotonin reuptake inhibitors, and notes that clinical studies so far have only been run in healthy people. Cannabis works on the endocannabinoid system. Those are separate pathways, which is probably why the combination feels like two layers rather than one bigger effect. But "separate pathways" is not the same as "studied together," and we are not going to pretend otherwise.

Smoking kanna with cannabis

People do roll kanna leaf or fermented powder into a joint. That is a traditional way to use the plant and it does work, though it is a fairly weak delivery method. What does not work is spraying a kanna extract onto rolling papers. Heat breaks the alkaloids down before you inhale them, so you mostly waste the product. We explained that in Rolling Papers + Kanna Spray. If you want the effect, take the spray under your tongue first and then smoke.

Our milled kanna leaf is what people use when they want to add the plant itself to a blend.

If you are going to combine them anyway

Here is the approach that produces the fewest bad reports:

• Kanna first, sublingual or nasal, 15 to 30 minutes before cannabis. That lets you feel where the kanna lands before you add anything.
• Half your usual kanna dose. For a 5 percent extract that is around 50 mg.
• Half your usual cannabis dose, at least the first time.
• Pick the kanna profile for the mood you want. Mesembrine for social and upbeat, mesembrenone for calm and mellow.
• Have water and food nearby. Do not do this on an empty stomach if you are prone to nausea.
• No alcohol in the mix. Three substances is where the "worst night" stories come from.

And if cannabis already makes you anxious, kanna is not a reliable fix. Some people say it helps. Plenty say it made it worse. That is a coin flip we would not take with a high dose.

Interactions and cautions. Do not combine kanna with SSRIs, MAOIs or other serotonergic medications. Cannabis laws vary by state; know yours. Not for use if you are pregnant or nursing. Do not drive after using either. Consult a physician before use. For adults 21 and over.

Disclaimer. These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease. Kanna is a traditional botanical, and traditional use does not establish that it will produce any particular result. Healing Herbals does not sell cannabis or THC products. Keep out of reach of children.

Keep reading: How to Replace Weed with Herbal Alternatives and How Introverts and Extroverts Experience Kanna Differently.