
Thorne Berberine is a well-made, NSF-certified version of the most researched 'metabolic' botanical, and a sensible choice if your clinician suggests berberine. Keep expectations in check, though: the average weight change in trials is about 2 pounds. Its drug-interaction profile also means it isn't something to add casually if you take prescription medications.
Why we like it
- NSF Contents Certified and made in Thorne's own U.S. facility
- Fully disclosed doses of two berberine forms
- Berberine has a meaningful research base for metabolic markers
Keep in mind
- Average weight loss in trials is under 1 kg
- Decreases CYP2D6, CYP2C9 and CYP3A4 activity, so it can interact with many drugs
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