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Evidence-Based Supplement Research
Evidence-Based Supplement Research
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Berberine and Reduced Blood Pressure

Research synthesisLow evidenceMixed effect size3 studies · 1 beneficial · 2 neutral · 0 harmful

Across 3 studies, 1 reported a beneficial moderate-sized effect on blood pressure reduction, while 2 found no significant difference between berberine and placebo. The predominant effect direction is neutral, and effect sizes were mixed (small to moderate). The most-studied dose is 500 mg twice daily (1000-1200 mg/day), and effects were typically observed over 12 weeks in clinical populations with hyperlipidemia, type 2 diabetes, or obesity.

  • Effective dose range: 500 mg twice daily (1000-1200 mg/day)
  • Studied populations: people with hyperlipidemia, type 2 diabetes, or obesity

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. Many of the included studies did not reach statistical significance — effect may be smaller than the predominant direction suggests.

Generated Jul 15, 2026
Doses used in studies
  • mg/day: 1,000–1,200 (median 1,100, IQR 1,050–1,150) — 2 studies
Time to effect
Median: 2.8 months · IQR 2.8 months–2.9 months · Range 2.8 months–3 months — Reported in 3 of 3 studies
Safety in these studies
3 of 3 papers
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