Site answer

How often are prices updated?

Prices come from a scheduled refresh that reads each vendor's own live store, and a separate job re-checks published listings against the live store so drifted or dead rows get flagged.

Every row shows when it was last checked, and the footer of every page shows when the index was last built.

From: Methodology › Continuous re-checking

All help topics · Answers restate pepmg's own pages; the linked section is the authority.

All products listed are sold by third-party vendors for laboratory and research use only (RUO). Where an FDA label or a peer-reviewed study has published a dose, pepmg reports it with the source named, because that is safer than guessing. It is a report, not medical advice and not a recommendation to use anything. pepmg sells nothing and ships nothing. Listings are price-tracking data, not endorsements.