Thorne Berberine-500

Thorne · Capsule · 500 mg

Price/day

€0.62

Dose

500 mg

Servings/pack

Pack price

€36.95

NSF Certified

Transparency Index

8.1/10

Recommended The quality benchmark for berberine. If you won't compromise on purity and independent testing, the Thorne premium is worth it.

Rating breakdown

Evidence for ingredient 6.0/10

Berberine has solid evidence for blood sugar and cholesterol regulation. Multiple RCTs show effects comparable to metformin.

Value for money 6.0/10

€0.62 per day is on the higher end, but the Thorne premium is justified by NSF certification and top purity standards.

Product quality 9.0/10

Thorne is known for exceptional purity and potency, recommended by sports physicians and internists. No fillers.

Label honesty 9.0/10

Thorne adheres strictly to evidence-based communication. No health claims beyond what the data supports.

Third-party testing 9.0/10

NSF Certified for Sport. Every batch is independently tested for purity, potency, and contaminants — the industry gold standard.

Product Description

Thorne Research is a US manufacturer specializing in clinical-grade supplements for over 30 years, known for avoiding unnecessary fillers and collaborating with medical institutions. Berberine-500 is NSF Certified for Sport.

What We Like

NSF Certified for Sport: Independent batch testing — the gold standard for supplement quality
No fillers: Thorne consistently avoids magnesium stearate and other common excipients
Physician-recommended: Frequently cited by internists and sports physicians as a reference brand
500 mg per capsule: Matches the standard dose used in clinical studies

What We’re Missing

Price: The quality premium is real — cheaper berberine alternatives exist
Bioavailability: Standard berberine HCl has known absorption limitations; phytosome forms are more bioavailable

Other Berberine products

Thorne Berberine 500mg

8.5/10

Recommended

Thorne Berberine Phytosome 500mg

8.5/10

Recommended

NOW Foods Berberine 1000 mg

7.7/10

Recommended

Dihydroberberine (GlucoVantage) 200 mg

7.4/10

Recommended

Ingredient dossier

Berberine shows clinically relevant blood glucose and LDL effects in RCTs for type 2 diabetes. Significant drug interactions and unclear EU regulatory status require caution.

Read full dossier: Berberine →