Kanna (Sceletium tortuosum) likely increases serotonin levels and enhances pro-social and gratitude-related neurocircuitry.

“And that's a compound called Kanna, K-A-N-N-A. It's an interesting compound. It goes by another name as well, which is, and I'm going to mispronounce this and I apologize, this is Sceletium tortuosum. Please see our timestamps if you want to see the spelling of that. But I'll just call it Kanna, by its other name for short. It's an herb that is traditionally chewed prior to stressing endeavors, is how it's described on an examine.com. But I looked at some of the studies on this. It's kind of interesting. It very likely increases the amount of serotonin in the body and pretty potently.”