Methodology

1. Dose cleaning

Each label line is mapped to a canonical ingredient, units are normalised (mg, mcg, g, CFU) and converted to a daily dose (per serving × servings per day). Raw label values are never changed.

2. Ranking score (100)

• Dose fit 40: within [FDA Daily Value, UL]; scaled below; 0 above the upper limit.
• Label transparency 20.
• Data verification 15: official database 10 (brand site 4, Open Food Facts 2) + 5 if dose QC passed.
• Company transparency 15: profile, official IDs, parent/ownership record (5 each).
• Third-party COA 10.

Rankings measure data clarity and dose fit, not efficacy or safety. Prices are unverified and not scored.

3. Ownership

Every brand → company → parent link stores a source URL and a status. Reported but unreviewed changes are shown as "pending verification".