Berberastine
Research reviewed: Up until 03/2026
Berberastine is a dietary supplement with 9 published peer-reviewed studies involving 280 participants, researched for Antimicrobial Activity, Blood Sugar Control, Cardiovascular Health and 1 more areas.
Evidence at a Glance
Strength is scored by study design, sample size, study type, and outcomes
Antimicrobial Activity
WeakBlood Sugar Control
WeakCardiovascular Health
WeakAnti-inflammatory Activity
WeakResearch Visualised
Visual breakdown of the clinical data.
Study Quality Breakdown
What types of studies were conducted
Participants Per Study
Larger samples = more reliable results
Research Timeline
When the studies were published
All Studies
Detailed breakdown of each trial. Click to expand.
Antimicrobial Activity
To evaluate antibacterial and antifungal activity of Berberastine compared to Berberine
Study Type
In vitro study
Purpose
To evaluate antibacterial and antifungal activity of Berberastine compared to Berberine
Dose
Berberastine 0.1-10 mg/mL
Participants
Panel of 10 microbial strains
Duration
48 hours
Results
Berberastine showed comparable or superior antimicrobial activity to Berberine against most tested pathogens, with MIC values ranging from 0.25-4 mg/mL. Particularly effective against MRSA strains.
How They Measured It
MIC assays against S. aureus, E. coli, Candida albicans, Aspergillus fumigatus
To assess synergistic antimicrobial effects of Berberastine with conventional antibiotics
Study Type
In vitro study
Purpose
To assess synergistic antimicrobial effects of Berberastine with conventional antibiotics
Dose
Berberastine 0.01-5 μg/mL + standard antibiotics
Participants
MRSA and E. coli strains
Duration
24 hours
Results
Berberastine demonstrated strong synergy (FIC index <0.5) with several antibiotics against resistant strains, suggesting potential as an antibiotic adjuvant to overcome drug resistance.
How They Measured It
Checkerboard microdilution assay, fractional inhibitory concentration (FIC) analysis
Blood Sugar Control
To compare hypoglycemic effects of Berberastine and Berberine in diabetic rats
Study Type
Animal study
Purpose
To compare hypoglycemic effects of Berberastine and Berberine in diabetic rats
Dose
50-150 mg/kg Berberastine vs Berberine
Participants
30 STZ-induced diabetic rats
Duration
4 weeks
Results
Berberastine showed significant hypoglycemic effects comparable to Berberine, improving glucose tolerance, enhancing insulin secretion, and protecting pancreatic beta cells from oxidative damage.
How They Measured It
Fasting glucose, glucose tolerance test, HOMA-IR, pancreatic histology, insulin secretion
To investigate the mechanism by which Berberastine improves glucose uptake in muscle cells
Study Type
Animal study
Purpose
To investigate the mechanism by which Berberastine improves glucose uptake in muscle cells
Dose
10-100 μM Berberastine (cell), 100 mg/kg (animal)
Participants
L6 myotubes and 20 HFD-fed mice
Duration
72 hours (cell), 6 weeks (animal)
Results
Berberastine activated AMPK and AdipoR1/R2 signaling, stimulated GLUT4 translocation to the plasma membrane, and increased glucose uptake in muscle cells by 58% at 100 μM. In vivo results confirmed metabolic benefit.
How They Measured It
GLUT4 translocation, AMPK activation, glucose uptake assay, adiponectin receptor signaling
Cardiovascular Health
To evaluate vasorelaxant mechanisms of Berberastine on vascular smooth muscle
Study Type
In vitro study
Purpose
To evaluate vasorelaxant mechanisms of Berberastine on vascular smooth muscle
Dose
10-300 μM Berberastine
Participants
Isolated rat aortic rings
Duration
Acute experiments
Results
Berberastine induced concentration-dependent vasorelaxation (Emax 78%), mediated through calcium channel inhibition and activation of cGMP pathway. Endothelium-independent mechanisms also identified.
How They Measured It
Vascular tension measurement in isolated aorta, calcium channel blockade, cAMP/cGMP signaling
To assess the antiarrhythmic potential of Berberastine in experimental cardiac arrhythmia models
Study Type
Animal study
Purpose
To assess the antiarrhythmic potential of Berberastine in experimental cardiac arrhythmia models
Dose
10-30 mg/kg Berberastine
Participants
24 rats with CaCl2-induced arrhythmias
Duration
Acute
Results
Berberastine reduced arrhythmia incidence and severity, prolonged action potential duration, and blocked hERG and INa channels in a concentration-dependent manner, suggesting anti-arrhythmic activity.
How They Measured It
ECG monitoring, arrhythmia scoring, ion channel electrophysiology (patch clamp)
Anti-inflammatory Activity
To characterize anti-inflammatory properties of Berberastine compared to Berberine
Study Type
In vitro study
Purpose
To characterize anti-inflammatory properties of Berberastine compared to Berberine
Dose
5-100 μM Berberastine
Participants
RAW 264.7 macrophages and THP-1 cells
Duration
24 hours
Results
Berberastine significantly reduced NF-κB activation, cytokine production (IL-6, TNF-α), and COX-2 expression with slightly lower potency but different selectivity profile compared to Berberine.
How They Measured It
NF-κB activation, cytokine production, COX-2 expression, prostaglandin E2
To review the pharmacological properties of Berberastine and structurally related alkaloids
Study Type
Systematic review
Purpose
To review the pharmacological properties of Berberastine and structurally related alkaloids
Dose
Various concentrations
Participants
Review of 30 pre-clinical studies
Duration
Various
Results
Berberastine, an isoquinoline alkaloid from Berberis species, demonstrates antimicrobial, antidiabetic, antiarrhythmic, and anti-inflammatory properties, though clinical data are limited.
How They Measured It
Systematic literature review
To evaluate anti-arthritic effects of Berberastine in adjuvant-induced arthritis in rats
Study Type
Animal study
Purpose
To evaluate anti-arthritic effects of Berberastine in adjuvant-induced arthritis in rats
Dose
50 mg/kg Berberastine daily
Participants
20 rats with CFA-induced arthritis
Duration
21 days
Results
Berberastine significantly reduced paw edema, joint inflammation score, radiographic bone erosion, and synovial IL-1β and TNF-α compared to vehicle controls.
How They Measured It
Joint inflammation score, paw volume, radiographic bone erosion, synovial cytokines
Frequently Asked Questions
Common questions about Berberastine research
There are currently 8 peer-reviewed studies on Berberastine (Berberastine), involving 280 total participants. Research covers Antimicrobial activity, Blood sugar control, Cardiovascular health and 1 more areas. The overall evidence strength is rated as Weak.
The evidence is currently rated as "Weak Evidence". This rating is based on study design quality (randomisation, blinding, placebo controls), sample sizes, study types (0 human studies), and reported outcomes.
Berberastine has been researched for: Antimicrobial activity, Blood sugar control, Cardiovascular health, Anti-inflammatory activity. Each area has its own body of evidence which you can explore in the study breakdowns above.
Currently all 8 studies on Berberastine are animal or in-vitro studies. Human clinical trials are needed before the evidence can be rated above "Weak".
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