Transparency
We verify and enrich our articles using peer-reviewed research and trusted databases. These are the 13 databases we draw on — not every one is used for every article, but together they form the network we rely on.
The NIH/NLM database of 35M+ citations from peer-reviewed biomedical literature. Our primary source of clinical evidence.
VisitThe European database of biomedical literature and abstracts — open access to millions of articles.
VisitAn open catalog of scholarly works, authors and institutions — a free alternative to commercial databases.
VisitAI-powered paper search and citations from the Allen Institute for AI.
VisitThe DOI registry and scholarly metadata. It verifies the identity and citability of every source.
VisitThe Directory of Open Access Journals — a quality check for open publishing.
VisitThe USDA's official nutrition database — food composition and nutrient data.
VisitThe NIH database of chemical compounds — structure and properties of active substances.
VisitSupplement–drug interactions mined from the scientific literature (Allen Institute for AI).
VisitFinds the legal open-access full text of a study by its DOI.
VisitPlant phytochemicals and traditional (ethnobotanical) uses — mirrored into our own database (public domain, CC0).
VisitWe also grade every claim by strength of evidence (level 1–4) — from strong randomized trials to traditional use — so you know how solid the ground beneath it is.