Berberine and Reduced Waist Circumference

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

Across 3 studies, 2 reported beneficial effects of berberine on reduced waist circumference, with effect sizes ranging from small to moderate. The median study duration was 84 days, and the most studied dose was 1200 mg/day, primarily in clinical populations such as patients with type 2 diabetes or adults with obesity. Effects were typically observed at around 12 weeks.

Effective dose range: 1200 mg/day
Studied populations: patients with type 2 diabetes, adults with obesity

Caveats: Evidence base is small (only 3 studies) — conclusions should be considered preliminary. The neutral RCT had the highest evidence score (6) and found no effect, contrasting with two lower-quality meta-analyses showing beneficial effects, suggesting potential overestimation in pooled analyses.

Generated Jul 15, 2026

Doses used in studies

mg/day: 1,200 (median 1,200, IQR 1,200–1,200) — 1 study

Time to effect

Median: 2.8 months · IQR 2.8 months–2.8 months · Range 2.8 months–2.8 months — Reported in 1 of 3 studies

Safety in these studies

Overall tolerabilityNo significant difference
Regarding safety, no significant difference was observed between berberine and placebo.
from: Efficacy and safety of berberine on the components of metabolic syndrome: a systematic rev

3 of 3 papersPopulation:

The efficacy and safety of berberine in combination with cinnamon supplementation in patients with type 2 diabetes: a randomized clinical trial.
- 2025-02-25
- RCT
- European journal of nutrition 64(2)
- - Asieh Mansour
  - Sayed Mahmoud Sajjadi-Jazi
  - Hadis Gerami
  - Atie Sadat Khorasanian
  - Behnam Moalemzadeh
  - Sara Karimi
  - Nima Mohamadi Afrakoti
  - Vahid Mofid
  - Mohammad Reza Mohajeri-Tehrani
  - Azita Hekmatdoost
- PubMed: 39998703
- DOI: 10.1007/s00394-025-03618-9
10 Insights on
- Reduced Waist Circumference
- High evidence
- Rigorous Journal
- Clinical
there was no difference in other measured metabolic and anthropometric parameters between the two groups
Effect
Neutral
Effect size
Small
Significant
No
Dose
600 mg/day
The effect of berberine on obesity indices: a systematic review and meta-analysis.
- 2025-11-27
- Meta-Analysis · n = 23
- International journal of obesity (2005) 50(1)
- - Iman Elahi Vahed
  - Erfan Shahir-Roudi
  - Sina Nojumi
  - Samieh Golmohammadi
  - Mehdi Moradi Shahrebabak
  - Niloofar Sharafi Tafreshi Moghadam
  - Amir Sajad Bagheryan
  - Maryam Moftakhar
  - Fateme Shamsipour
  - Mahla Jafari
  - Hossein Soltaninejad
  - Mohammad Rahmanian
- PubMed: 41310257
- DOI: 10.1038/s41366-025-01943-x
4 Insights on
- Reduced Waist Circumference
- High evidence
- Clinical
WC (MD of -1.32 kg/m², 95% CI: -2.24 to -0.41, p < 0.0046)
Effect
Beneficial
Effect size
Small
Significant
Yes
Efficacy and safety of berberine on the components of metabolic syndrome: a systematic review and meta-analysis of randomized placebo-controlled trials.
- 2025-07-16
- Systematic Review
- Frontiers in pharmacology 16
- - Dangzhen Liu
  - Haiyan Zhao
  - Yiwen Zhang
  - Jingqing Hu
  - Hong Xu
- PubMed: 40740996
- DOI: 10.3389/fphar.2025.1572197
10 Insights on
- Reduced Waist Circumference
- High evidence
berberine significantly reduces ... waist circumference (WC) (WMD: -3.270 cm; 95% CI: -4.818 to -1.722; p < 0.001)
Effect
Beneficial
Effect size
Moderate
Significant
Yes
Dose
not stated in the abstract

Berberine and Reduced Waist Circumference

The efficacy and safety of berberine in combination with cinnamon supplementation in patients with type 2 diabetes: a randomized clinical trial.

The effect of berberine on obesity indices: a systematic review and meta-analysis.

Efficacy and safety of berberine on the components of metabolic syndrome: a systematic review and meta-analysis of randomized placebo-controlled trials.