Jamieson
Certifications
5 certifications
Violation History
8 incidents
Is Jamieson a trustworthy supplement brand?
Jamieson receives a brand trust score of 100/100 in GoodSupp's independent analysis. The company was founded in 1922 and is headquartered in Toronto, Ontario, Canada. Our research did not find independently verified third-party certifications for this brand. While this doesn't mean their products are low quality, third-party testing is considered a strong indicator of commitment to quality assurance. Note: Jamieson has 8 historical regulatory incidents on record. These are factored into the overall trust score and are detailed in the violation history section above.
Is Jamieson third-party tested?
GoodSupp's research did not find verified third-party testing certifications for Jamieson. Third-party testing by organizations like NSF International, USP, or Informed Sport is considered one of the strongest indicators of supplement quality. Without it, consumers must rely more heavily on the brand's own quality claims. This doesn't necessarily mean Jamieson's products are low quality, but it does mean there's less independent verification of their claims.
What are the best Jamieson supplements?
Based on GoodSupp's quality analysis, the highest-rated Jamieson supplements are: Chewable Vitamin D3 1000 IU (Tangy Orange (score: 100/100); Extra Strength D3 2500 IU (score: 100/100); Vitamin D3 2,500 IU (score: 100/100). These scores are calculated from ingredient quality, dosage adequacy, bioavailability, label transparency, and inactive ingredient safety. Scores can vary significantly across a brand's product line — a high brand trust score doesn't guarantee every individual product is top-quality.
Where is Jamieson located?
Jamieson is headquartered in Toronto, Ontario, Canada. The company was founded in 1922. They currently offer 384 products in their supplement lineup. Their official website is jamiesonvitamins.com. Manufacturing location may differ from corporate headquarters — look for GMP certification to verify manufacturing quality standards.
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