KNINDEX

Berberine

What are the criteria for choosing a good Berberine product?

1

Actual berberine HCl content① Effective dose /30

"Coptis extract 500 mg" does not state how much berberine is present. Comparing against the study protocol (900–1,500 mg/day divided) requires the actual figure.

How to check — Look for "Berberine HCl 00 mg" in the ingredient list.

Evidence:Yin 2008, Metabolism

2

≥97% standardisation with lot testing② Purity & impurity testing /25

Without standardisation, berberine content varies lot to lot and intake cannot be controlled.

How to check — Check for a "97% standardised" claim together with published lot-level test results.
3

cGMP / NSF-certified facility③ Manufacturing & safety certification /20

Botanical extracts carry contamination risk, so facility certification is the safety baseline.

How to check — Check for cGMP compliance statements and third-party facility certification such as NSF.
4

Absorption-engineered raw material④ Raw-material grade /15

Berberine has low bioavailability, so absorption technology at the raw-material stage is the quality differentiator.

How to check — Check for named raw materials such as Berbevis® (phytosome) or GlucoVantage® (dihydroberberine).
5

Contraindication labelling⑤ Information transparency /10

It is contraindicated in pregnancy and breastfeeding and needs caution alongside glucose-lowering drugs. Omitting this costs transparency points.

How to check — Check that the label or product page states who should avoid it and which medications require caution.

Evidence:UCLA Health 2023

See how real products score against these criteria

View product comparison →