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CitedHealth

Evidence-Based Supplement Reviews

Every claim cited.

We read the studies so you don't have to.

Evidence-based supplement research you can trust. We analyze peer-reviewed clinical studies from PubMed and grade every supplement ingredient on a transparent A–D scale. No sponsored rankings, no manufacturer influence — just science.

Evidence Grading System

Every supplement claim on this site is graded on an A–D scale based on peer-reviewed clinical research from PubMed. Our algorithm evaluates study design (RCTs rank highest), consistency of results, sample sizes, and the overall body of evidence. No manufacturer sponsorship influences our grades.

A Strong Evidence

Multiple randomized controlled trials (RCTs) or meta-analyses with consistent positive results and large sample sizes.

B Good Evidence

At least one RCT with mostly consistent results across studies. Evidence suggests benefit but more research may be needed.

C Some Evidence

Small studies or observational data with some positive signals. Promising but insufficient for strong recommendations.

D Very Early Research

In vitro studies, case reports, or pilot studies only. Early-stage research that requires clinical validation.

How It Works

No ads. No sponsored rankings. Just science.

1

Search PubMed

We search PubMed for every clinical study on supplement ingredients.

2

Extract Findings

We extract the key findings — sample sizes, study types, and results.

3

Grade A through F

We grade the evidence like a school report card — from A (strong) to F (negative).

4

Clear Answer

You get a clear answer in seconds — does this supplement actually work?

Cited Health Network

Explore evidence-based research across multiple health domains.

FDA Disclaimer: These statements have not been evaluated by the Food and Drug Administration. The products and information on this website are not intended to diagnose, treat, cure, or prevent any disease. The evidence grades presented are based on our analysis of published peer-reviewed research and do not constitute medical advice. Always consult your healthcare provider before starting any supplement regimen.