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Kanna side effects

Across 231 first-hand reports, people mentioned a side effect 9 times (about 4 per 100 reports). The most common: drowsiness, appetite suppression, brain fog. User reports show what people notice — they can't tell you whether Kanna is safe for you.

Reported side effects

drowsiness2
appetite suppression1
brain fog1
agitation1
panic attack1
pins and1
breathing difficulty1
unpleasant rush1

What got worse for some people

In their own words

“kanna works well for some people. But it doesn't work well for me and makes me depressed.”
MixedRead the discussion ↗
“While I have tried zembrin(Kanna) alone in the past, I got side effects that you normally see in ssris such as fatigue and sexual dysfunction.”
MixedRead the discussion ↗
“so far iv had great effects with the substance (300mg sublingual)...There is no crash...compares to phenibut for me”
HelpedRead the discussion ↗

Is Kanna safe? What the research covers

BResearch: Moderate8 meta-analyses · 0 randomized trials on PubMed
Lancet · 2026
Disease burden attributable to intimate partner violence against females and sexual violence against children in 204 countries and territories, 1990-2023: a systematic analysis for the Global Burden of Disease Study 2023

Conclusion: IPV and SVAC are substantial contributors to global health burden, and their health consequences span a variety of individual health outcomes. Importantly, mental health disorders account for the greatest share of disease burden among survivors. Investing in prevention of these avoidable risk factors has the potential to avert millions of DALYs and considerable premature mortality each year. Our findings represent strong evidence for global and national leaders to elevate IPV and SVAC among public health priorities. Sustained investments are needed to prevent IPV and SVAC and to implement inte

Nat Genet · 2025
Genome-wide analyses identify 30 loci associated with obsessive-compulsive disorder

Conclusion: OCD genetic risk was shared with 65 of 112 additional phenotypes, including all the psychiatric disorders we examined. In particular, OCD shared genetic risk with anxiety, depression, anorexia nervosa and Tourette syndrome and was negatively associated with inflammatory bowel diseases, educational attainment and body mass index.

Kanna side effects: what 231 users report — PlainPill