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

Research synthesisLow evidenceSmall effect3 studies · 1 beneficial · 2 neutral · 0 harmful

Across 3 studies on berberine for reduced blood pressure, 1 reported a beneficial moderate-sized effect, while 2 found neutral effects. The median study duration was 84 days (12 weeks). Most evidence points toward a neutral effect, though the single beneficial study suggests possible benefit in obese adults. Doses ranged from 500 mg twice daily to 1200 mg/day, with the most commonly reported dose being 500 mg twice a day.

  • Effective dose range: 500 mg twice daily (1000 mg/day) to 1200 mg/day
  • Studied populations: adults 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. The single positive study (moderate effect) had a lower evidence quality score and did not report dose information, limiting its interpretability.

Generated Jun 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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