Editorial Policy

Label & Ledger explains supplement label comparisons and purchasing arithmetic for US readers. Updated: October 30, 2026.

Sources and scope

Background claims are linked to the relevant FDA, NIH ODS, NCCIH or FTC resources. Certification examples link to the issuing program. These links do not imply endorsement. Original calculation and recordkeeping methods are identified separately from source-backed claims.

Production

Content was prepared with AI assistance and checked against linked primary sources during implementation. No clinician review, laboratory testing, shopping survey, named expert or observed retailer price dataset is claimed. Guide dates record actual local creation or updates.

Examples

All price examples, package quantities used in calculations and calculator defaults are illustrative. They are not current offers, market averages or dose recommendations. Unknown ingredient quantities stay unknown.

Independence and commercial status

This local build has no active ad scripts, affiliate links, product sales or sponsored rankings. Any future commercial relationship must be disclosed at the relevant content and reflected in these policies.

Corrections

A publisher contact channel remains unresolved; see Contact. No response commitment is made until a working channel exists. Verified future corrections should retain a clear explanation and update the affected guide date.

Limits

Price comparisons cannot establish personal need, safe use or clinical equivalence. Consult a qualified healthcare professional about personal medical decisions.