Evidence-Based Supplement & Sourcing Guides

Who produces these guides?

Produced by Pure City Editorial, the editorial function of Pure City Shop. Pure City Shop publishes these guides and sells or plans to sell products discussed in them. These are affiliated evidence summaries, not independent product reviews. Pure City Editorial does not claim to be a separate legal entity, independent publisher, clinical practice, laboratory, regulator, standards body or certification program.

No independent clinician or technical reviewer is claimed unless a named reviewer and profile are shown. Profile last reviewed: 31 August 2026.

How these guides are prepared

1. Define the question and boundary. We identify the ingredient, form, dose, population, use, outcome or product-status question being discussed and do not treat those as interchangeable.
2. Use one disclosed ingredient source. On ingredient-specific PureCity.shop information pages, ingredient facts are limited to the matching ingredient page on PureCityResearch.org. That affiliated page is the sole external ingredient-information source. Its page is not independent corroboration.
3. Separate navigation from evidence. PureCity.shop product and related-guide links are first-party navigation or product-status context; they do not prove ingredient efficacy, product quality or finished-product performance.
4. Separate evidence layers and current status. Ingredient evidence is not a finished-product result. Supplier identity, manufacturing route, final label, finished-lot testing, release performance, stability and product-specific results remain planned or pending unless a current record for the exact product or lot is public.
5. State limits. We identify uncertainty and important safety boundaries and do not describe these guides as independent, exhaustive, systematic, clinical guidance or product certification.

Editorial context

Pure City Shop publishes these guides and has a commercial interest in products discussed on this site. That relationship does not by itself show that a conclusion is wrong, but it means the work is not financially independent of the seller. An affiliated source is not independent verification, and a source link does not imply that the source reviewed, certified or endorsed a Pure City article or product.

Corrections and review dates

To report a possible material factual error, broken source, undisclosed relevant financial relationship or inaccurate product-status statement, use Contact and include the article URL, the passage and the record supporting the concern. Do not include personal health information or request individual medical advice.

Our policy is to correct material errors in the visible article and add a dated correction note when a correction changes a conclusion, material safety statement or product-status statement. A Last substantively reviewed date is shown only after a documented reread of the article and its cited source; spelling, layout or link-formatting changes alone do not reset it. A review date does not claim independent clinical, technical, regulatory or legal approval.