What it is
Kanna is Sceletium tortuosum; standardized extracts may contain mesembrine alkaloids that interact with serotonin-related pathways.
Core function and why it is studied
Its composition or proposed mechanism makes mood and stress response, cognitive function logical research areas. Studies therefore examine stress, mood, and cognitive measures. That biological connection explains why it is studied; it does not by itself establish a meaningful benefit.
What the evidence means
Human evidence is limited by small samples, short studies, inconsistent preparations, or reliance on surrogate outcomes. The biochemical rationale is stronger than the clinical certainty.
How to compare products
Compare species, plant part, extract ratio, solvent, standardized constituents, serving amount, and contaminant testing.
