How We Calculate Trust Scores

Every supplement brand on SupplementChecker receives a trust score from 0 to 100. This score is calculated algorithmically from publicly available regulatory data, third-party certifications, and consumer safety records. No brand can pay to alter their score.

Scoring Algorithm

Every brand starts at 70/100 (baseline)

Points Added

  • NSF Certified for Sport: +15
  • USP Verified: +15
  • Informed Sport: +10
  • Publishes Lab Results: +10
  • Clean FDA Record: +10
  • 10+ Years in Business: +10
  • Third-Party Tested (self-reported): +5
  • Organic Certification: +5

Points Deducted

  • FTC Pyramid Scheme: -50
  • FTC Deceptive Claims: -20 to -30
  • FDA Warning Letters: -25
  • Product Recalls: -20
  • High Adverse Events: -15
  • No Third-Party Testing: -15
  • Proprietary Blends: -10
  • No GMP Certification: -10

Final score capped at 0-100. Grade (A+ through F) and risk level derived from final score.

Worked Example: WeightWorld

Here's how a real brand score is calculated:

Baseline70
GMP Certified+5
Clean FDA Record+10
10+ Years+10
No NSF/USP/Informed Sport-15
Final Score80/100 (B+)

Data Sources

Source What We Pull Weight
FDA Recalls & Warning Letters Product recalls, warning letters, enforcement actions High
FDA Adverse Event Reports (CAERS) Consumer-reported adverse events Medium
NSF Certified for Sport Independent product testing certification High
USP Verified U.S. Pharmacopeia product verification High
Informed Sport/Choice Banned substance testing for athletes Medium
FTC Enforcement Federal Trade Commission deceptive practices actions High
Health Canada (LNHPD) Licensed Natural Health Products Database Medium
GMP Certification Good Manufacturing Practice compliance Low
Brand Website Analysis Testing claims, certifications displayed, transparency Medium
Reddit Community Sentiment User discussion patterns across supplement subreddits Low
Amazon Review Analysis Product ratings and review theme analysis Low
Independent Lab Reports ConsumerLab, Labdoor public scores Medium

What We Don't Do

  • We never accept payment to change a score
  • We don't give medical advice
  • We don't use fake author bios or fabricated expert opinions
  • We don't invent data — if a source has no data for a brand, we say so

All data is updated monthly. Individual brand research sections note their specific update dates. See our full data sources page for update frequency details.