TrustedSupplementGuide

Check Your Supplement

Answer 4 questions. We calculate a 0–100 Trust Score based on transparent, label‑visible signals.

Look for a seal on the label (not just marketing text on a website).

If exact amounts are hidden, you can’t verify dose or compare alternatives.

“GMP” as a slogan is weaker than a verifiable certification/audit claim.

This is a small weight (10%) because additives alone don’t guarantee quality.

Top Verified Brands (Example List)

Editorial list based on publicly visible third‑party testing and transparency signals. Not medical advice, not an endorsement.

1. Thorne

Often cited for strong manufacturing and testing transparency.

Verified signals

2. Life Extension

Known for publishing testing details for many products.

Verified signals

3. NOW Foods

Large catalog; many products have third‑party testing signals.

Verified signals

4. Pure Encapsulations

Commonly used in practitioner settings; transparent labeling.

Verified signals

5. Nordic Naturals

Often associated with batch testing transparency for omega‑3s.

Verified signals

What this tool is (and isn’t)