Don’t take our word for it. Here’s every fact on this site, with its evidence grade, its caveats, and a link to the source, so you can check us.
We start you on the strong ones: findings that have been replicated or come from one large, well-controlled study. Moderate and weak facts are here too, labeled for what they are. Use “Link to this fact” to share a single card.
Health effects / Other evidence
The FTC stated that for 'the vast majority of OTC homeopathic drugs' there are 'no valid studies using current scientific methods showing the product's efficacy,' so therapeutic claims for them 'lack a reasonable basis and are likely misleading.'
Moderate evidence: A regulator's characterization of the evidence; no trials are cited or reviewed in the statement itself.
Source: FTC 2016 OTC homeopathic enforcement policy statement, Federal Register 81(239):90122-90123 Link to this fact
Health effects / Other evidence
Laboratory attention tests showed a reliable but small-sample effect of food colors (6 studies, 154 children, 0.27, 95% CI 0.07 to 0.47); the authors judge it too small and too old to support clinical or policy recommendations.
Weak evidence: Only 68 children in FDA-color-only studies; the colors-only result is vulnerable to single-study removal.
Source: Nigg 2012 Industry-funded Link to this fact
Information, not medical advice. See also: myths we won’t tell you.