Thorne

https://www.thorne.com Est. 1984 (42 years)

Thorne is an established supplement manufacturer founded in 1984, specializing in vitamins, minerals, amino acids, sports nutrition, and specialty formulations. The company maintains GMP certification and has a clean FDA record with no warning letters or recalls, though it has received 10 adverse event reports. While Thorne avoids proprietary blends in their formulations, the brand does not appear to publish third-party lab testing results or hold additional third-party testing certifications.

Red Flags

⚠No third-party testing certifications found

Verified Strengths

✓Established brand — operating since 1984 (42 years)

Certifications

GMP Certified

FDA Record

Warning Letters

Recalls

Adverse Reports

How We Calculated This Score

Every brand starts with a baseline score of 70/100.

Points added for: Third-party certifications (NSF +15, USP +15, Informed Sport +10), publishing lab results (+10), clean FDA record (+10), 10+ years in business (+10), organic certification (+5).

Points deducted for: FDA warning letters (-25), product recalls (-20), high adverse events (-15), no third-party testing (-15), proprietary blends (-10), no GMP (-10).

Score is capped at 0-100. Grade and risk level are derived from the final score.

All data sourced from FDA.gov, NSF.org, USP.org, and publicly available brand information. Last updated: 3/20/2026.