Evidence summaries, not medical advice.
Supplement Peer tells you what the published evidence says about supplement products. It does not tell you what you, personally, should take.
Everything on this site (analyses, tiers, trust scores, interaction flags, verdicts) is an evidence summary for informational purposes. It is not a diagnosis, a treatment plan, or a substitute for the judgement of a qualified clinician who knows your history.
Talk to a doctor or pharmacist before starting, stopping, or combining supplements, especially if you take prescription medication, are pregnant or breastfeeding, or have a medical condition. Supplement and drug interactions (CYP450 competition, transporter effects, additive pharmacology) can be clinically significant, and a website cannot screen for your individual situation.
A tier grades the compound's clinical evidence for a stated use, not the brand, and not you.
A verdict is a product-level judgement about evidence, dose, quality, and price, never a personal prescription. “Keep” does not mean “you should take this.”
Shows the specific study a claim is drawn from, so you can read it yourself.
Anchors a claim to a checkable source instead of to marketing copy.
Lets you judge study quality: design, size, population, endpoints.
Prove the product in your hand contains what the study tested, at the tested dose.
Prove the result applies to you; your health, medications, and context differ from trial populations.
Make a claim permanently true. Single studies get contradicted; evidence is a moving picture.
Science is not static. A new meta-analysis, a failed replication, a reformulation, or a quality recall can move a tier or flip a verdict, and it should. When that happens the rating changes regardless of any commercial relationship (see how we make money). Treat every verdict as the best current reading of the evidence, dated, not as a permanent truth. Note also that the catalog on this demo is illustrative sample data.