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Berberine · Amazon Berberine Brand #4
Berberine
HighUnderdosed
What the lab found
Failed Amazon marketplace testing for berberine content. Part of the 97% failure rate finding where 32 of 33 Amazon berberine products failed. Called 'Nature's Ozempic' on TikTok, but virtually none of the Amazon products contain enough berberine to have any effect.
Failure type · Underdosed
Active ingredient measured significantly below the labeled amount — not therapeutic.
Source
NOW Foods Amazon marketplace testing, 2025