People mainly take Berberine for blood sugar, weight loss, energy. Based on 143 first-hand reports and 109 meta-analyses & systematic reviews in the medical literature. Ranked #102 of 1,974 overall.
Of reports that state an outcome, 59% are positive.
Of the people who reported each effect, the share who said it got better.
Systematic reviews and meta-analyses from PubMed, with their published conclusions.
3+ meta-analyses or systematic reviews and 10+ randomized controlled trials in humans. The grade measures how much human research exists — read the conclusions below for what it found.
Conclusion: Treatment with berberine may be safe since it does not increase the incidence of total adverse events and the risk of hypoglycemia. Systematic Review Registration: https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=292975, identifier CRD42021292975.
PubMed 36467075 ↗Conclusion: Berberine is a safe medicinal plant ingredient that improves various clinical outcomes; however, there is a need for improvement of methodological quality in published meta-analyses. Additionally, the clinical effects of berberine need to be confirmed in high-quality RCTs.
PubMed 36999891 ↗Conclusion: There is strong evidence supporting the clinical efficacy and safety of berberine in the treatment of DM, especially as an adjunctive therapy. In the future, this may be used to guide targeted clinical use of berberine and the development of medications seeking to treat patients with T2DM and dyslipidemia.
PubMed 34956436 ↗Conclusion: In addition, Berberine is found to have a beneficial impact on gene regulation for the absorption of cholesterol at a daily dose of 300 mg in humans, an amelioration on glucose accumulation at 1.0 g daily dose was also observed. For all these reasons, this review gives an important good account of the impact of Berberine in obesity treatment and prevention.
PubMed 32353823 ↗As stated by users — not a recommendation. Follow the label or your doctor.
How often each side effect came up across all reports.
Verbatim quotes, shortened only — each links to the original discussion.
“I also use Berberine to keep insulin low but it doesn't do a lot of the other stuff metformin does”
“I for now use berberine”
“I don't think berberine decreases testosterone?”
“I'm taking Berberine myself because I suspect the effects might be similar.”
“Berberine activates AMPK, like Metformin does”
User data from public discussions; research from PubMed. Information only, not medical advice — talk to a doctor before starting, stopping or combining anything. Data updated October 2, 2026. How we rate