We welcome corrections, questions and new evidence from readers and brands.
What to send us
- Corrections. If a price, claim or fact is wrong, tell us the page and what you found.
- Brand evidence. If you are a brand with a new batch lab report, origin documentation or purification details, send them and we will review our score. See how we rank.
- Reader questions. We cannot give medical advice, but we will point you to the right guide.
What we cannot do
We cannot give medical advice or diagnose or treat any condition. Please speak to your doctor or pharmacist.