You browse a product
Pick something from the marketplace, or describe your health goal and let Resar rank options for you.
You should not have to guess what your supplements actually do.
Tired of being paranoid about the health products you take? Resar is for shoppers who want proof before they purchase — not another star rating or influencer pick.
Behind the scenes, indexed studies flow through an evidence engine. On the surface, you get plain scores, cited claims, and honest limits — so the anxiety can finally quiet down.
For you
Cited claims & scores
Honesty
Limits stay visible
Tools
Compare & stack
Claims link to papers
Each benefit shows which study supports it, with match confidence and a one-tap path to the source.
Five scores, not one star
Evidence, Safety, Effectiveness, Research Confidence, and Product Fit are scored separately.
Resar
Evidence core
Inner: research sourcesOuter: shopper outputs
Honest uncertainty
Study type, sample size, limitations, and directness stay visible on every product page.
Compare before you buy
Stack products side by side and see which listing has stronger cited support.
Buy with disclosure
Affiliate links are tagged and labeled next to the buy button. Commissions never change scores.
Research sources feed the center. Transparent scores, citations, and shopper tools radiate outward.
Find something worth checking
Browse by category, compare listings, or tell Goal matchmaker what you are trying to improve — sleep, joints, recovery, and more.
Read the receipt, not the ad
Open the product evidence page: linked papers, AI summaries with limitations, and citation chips on every benefit claim.
Decide with scores you can audit
Five separate scores, score-change history, and affiliate disclosure beside the buy button — so commerce never outruns evidence.
Listing pipeline
Product details captured
Listing text, ingredients, and Amazon metadata become the starting point — not the final word.
Indexed research gathered
PubMed, Crossref, OpenAlex, and Semantic Scholar are searched and deduplicated by DOI.
Top papers curated
AI ranks the five most relevant studies, maps benefits to citations, and flags weak matches.
Scores calculated openly
Evidence and Product Fit are computed from study quality, match confidence, safety, and practical use.
Listing published with context
Nothing ships without linked papers, visible uncertainty, and a disclosed outbound buy link.
What you see on every product page
Evidence and Product Fit up front, citation-tethered summaries, expandable study deep dives, score-change history, and affiliate disclosure beside checkout.