A shared, sourced record of psychedelic safety data.
Across psychedelic trials, adverse events are reported in different formats, scattered across registries and papers. Anyone trying to understand the safety picture has to rebuild it from scratch, trial by trial. We think that work should be done once, in the open, and shared.
What we do
We collect adverse-event data that trials have already reported to public registries and bring it together in one place, each figure shown with its sample size and a link back to the trial it came from. We draw no conclusions. We show what trials reported, and the record grows as more trials report.
Our thinking
- Aggregate, don’t author.
- Every number and every term comes from the source. We don’t write our own descriptions of compounds or their effects. Even careful wording can drift from what a trial actually reported, and that would make the record less trustworthy, not more.
- Accuracy over reach.
- When we can’t confirm a figure against the structured source, we leave it out. We would rather show less and be certain of it than show more and be approximately right.
- Sample sizes, always.
- This field has drawn large conclusions from small studies. Every rate is shown with the number of participants behind it, because that denominator is the context that keeps a number honest.
- Neutral by design.
- We make no claim about whether any compound is safe, and we’re not affiliated with any sponsor, regulator, or organization whose trials appear here. The data speaks for itself.
How you can help
Running a trial? When adverse events are reported in a standard, comparable form, their safety data becomes reusable, for a team’s own analyses and for everyone designing the next study. This resource grows as more trials share their safety data that way.
Partner or correct a number. If you’d like to contribute data, collaborate, or flag a figure that doesn’t match its source, we’d like to hear from you. Accuracy is a shared effort.
Designed and built by Tyler Hathaway · LinkedIn
Where the numbers come from
All data is drawn from ClinicalTrials.gov (v2 API), last fetched 2026-10-30. Every figure on this site is auto-extracted directly from the registry and has not been independently verified by a person. Each number is shown with its sample size and a link back to the source trial so you can check it yourself.
Read the full methodGo deeper
Neutrality & governance
How a shared standard could stay neutral: a proposed consortium model, steering committee, and funding caps.
Contributing data
A concept for how a trial team would add harmonized safety data, and what they’d get back.
Term mapping
How reported adverse-event terms line up with their MedDRA organ-class groupings, and where they don’t.