Berberine and Reduced Body Mass Index

Research synthesisLow evidenceSmall effect4 studies · 2 beneficial · 2 neutral · 0 harmful

Across 4 studies, 2 reported small beneficial effects on body mass index (BMI), while 2 found no significant difference. The median study duration was 12 weeks, and typical doses ranged from 500 mg twice daily to 1200 mg/day. Populations studied included clinical groups with hyperlipidemia, type 2 diabetes, or obesity.

Effective dose range: 500-1200 mg/day (typically 500 mg twice daily)
Studied populations: clinical populations with metabolic conditions (hyperlipidemia, type 2 diabetes, obesity)

Caveats: The two highest-quality randomized controlled trials (evidence scores 7 and 6) showed neutral results, while lower-quality meta-analyses reported small but statistically significant benefits. This inconsistency weakens confidence in the effect. Evidence is limited to clinical populations, and generalizability to healthy individuals is unclear.

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–2.8 months · Range 2.8 months–2.8 months — Reported in 2 of 4 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
Overall tolerabilityReported
No serious adverse event was reported.
from: Effect of Berberine on Cardiovascular Disease Risk Factors: A Mechanistic Randomized Contr

4 of 4 papersPopulation:

Effect of Berberine on Cardiovascular Disease Risk Factors: A Mechanistic Randomized Controlled Trial.
- 2021-07-26
- RCT · n = 84
- Nutrients 13(8)
- - Jie V Zhao
  - Wai-Fung Yeung
  - Yap-Hang Chan
  - Dana Vackova
  - June Y Y Leung
  - Dennis K M Ip
  - Jiaxi Zhao
  - Wai-Kwan Ho
  - Hung-Fat Tse
  - Catherine Mary Schooling
- PubMed: 34444711
- DOI: 10.3390/nu13082550
9 Insights on
- Reduced Body Mass Index
- High evidence
- Rigorous Journal
- Clinical
Changes in...body mass index...after the intervention did not differ between the berberine and placebo groups
Effect
Neutral
Effect size
Small
Significant
No
Dose
500 mg orally, twice a day
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 Body Mass Index
- 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 Body Mass Index
- High evidence
- Clinical
BMI (MD of -0.48 kg/m², 95% CI: -0.89 to -0.07, p < 0.0216)
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 Body Mass Index
- High evidence
body mass index (BMI) (WMD: -0.435 kg/m²; 95% CI: -0.856 to -0.013; p = 0.043)
Effect
Beneficial
Effect size
Small
Significant
Yes
Dose
not stated in the abstract

Berberine and Reduced Body Mass Index

Effect of Berberine on Cardiovascular Disease Risk Factors: A Mechanistic Randomized Controlled Trial.

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.