Corrections and updates.

Use the contact form and choose Editorial correction. It helps if you include:

• the page address, or its content ID (PA-####), shown at the end of every guide and review;
• what you think is wrong, quoting the sentence if you can;
• the source that shows the correct information, with a link if one exists.

Please do not send medical records or other personal health details. We cannot answer personal medical questions.

We check every report against the sources the page cites and against the source you send. If the page is wrong, unclear or out of date, we fix it. If the sources support what the page says, we leave it as it is; if you gave an email address, we may write back to explain.

We do not promise a fixed response time. Reports are read by the editorial team, and errors that could mislead a reader about evidence, safety warnings or regulatory status are handled first.

• A material correction is one that changes meaning: a fact, a number, an evidence level, a regulatory status, a review finding or a source identifier. It is made on the page and recorded in the page's update log as Corrected, with the date and a short description of what changed.
• Updates and clarifications that add information or improve wording are logged as Updated. Routine checks that change nothing are logged as Checked, and regulatory status checks as Status re-checked.
• Small fixes that do not change meaning, such as typos, may be made without a log entry.
• We do not silently change a finding or an evidence rating.

Update-log entries for guides, reviews and comparisons are collected, newest first, in research updates.

Published studies are sometimes corrected or retracted after we cite them. When we learn of this, we mark the source in the page's source list and re-check every claim that relies on it. If a claim no longer holds, the page is corrected and the change is logged.

If a report affects a product or supplier link, we pause that link while we check, and readers see a short explanation instead of being sent on. Our product reviews are re-checked on a schedule described in the methodology.

No corrections had been published as of October 18, 2026, when the site's first guides went live. Material corrections will be listed here with the date, the page and what changed, and each will also appear in the page's own update log.