Start with your question.
Updated 3 November 2026 · By Root & Evidence Editorial · No independent clinical review claimed
If a friend recommends a supplement, it is reasonable to ask what it did for people like you. Choose the question that brought you here.
Where would you like to start?
Could magnesium help me sleep? ↗
Start with this short trial. Compare the change in sleep symptoms with placebo, then check how closely the participants resemble you.
What would convince me that moringa affects blood sugar? ↗
Read the two completed outcome reviews. Follow each estimate back to the publication and see why the confidence judgment differs from a claim of effectiveness.
Could a supplement interact with my medicines? ↗
Use the interaction guide to prepare a list of products, doses, and questions for your pharmacist.
Which amount on the bottle matters? ↗
Read a Supplement Facts label one serving at a time. Then learn which quality claims you can check in the third-party testing guide.
How to read a rating
Read the finding first, then its certainty. High, Moderate, Low, and Very low describe how confident we are about a particular outcome in a defined group. “No eligible human evidence” means a documented search found no qualifying human study. “Not yet rated” means our appraisal is unfinished.
Keep exploring
Browse all six supplements ↗ · Search human studies ↗ · Check product testing ↗