Editorial policy

Figures come from the data

Every number on a page is read from the NIH Dietary Supplement Label Database or computed from it by code that is versioned and re-run on every release. No editor types a figure into a page. Reference values (Daily Values, upper intake levels) come from the regulation and the Institute of Medicine tables, checked against saved copies of those sources on every build. The methodology describes each step.

How AI tools are used

PlainVitamins is built with AI tools by the studio that owns it (named on the about page). They write the code that builds the pages, the sentences that turn a product's data into words (the same sentence pattern for every product, filled with that product's own figures), and the text of the guides and analyses. They do not invent figures: a sentence that states a number takes it from the database. Every page is made this way, and the footer of every page says so. A person at the studio sets the rules on this page and answers for what is published.

No advice, no ratings

Pages describe labels. They say where an amount sits against other products, the Daily Value and the adult upper limit; they do not say whether anyone should take a product, and they do not rate quality or effectiveness. Where a page touches safety, it points to the label's own warnings, the NIH Office of Dietary Supplements fact sheets and a clinician.

Independence

The site is paid for by display advertising served by Journey by Mediavine. No brand, manufacturer or retailer pays for coverage or placement, and there are no affiliate links. Every product in the database gets a page by the same rules, and lists are ordered by data (how many products, how much), never by payment.

Corrections

Write to hello@plainvitamins.com with the page address and what looks wrong. We compare the page with the NIH label record:

• If our processing is wrong (a grouping, a conversion, a sentence), we fix the code, rebuild every page it affects and record the correction in the changelog.
• If the NIH record differs from the label, we say so in our reply; the record can be reported to the database, and the page follows at its next release.
• If the product has changed since its label was transcribed, the page keeps the transcribed label with its date until NIH records the new one.

We reply to every correction request, with the change made or the reason it was not.