# StimIndex

> StimIndex grades pre-workout supplements on clinically effective doses, not marketing. Every tier is a reproducible calculation from the label, a cited reference dose, and nothing else.

## Docs

- [Methodology](https://www.stimindex.com/methodology): the exact formulas, weights, and caps behind every tier.
- [Methodology changelog](https://www.stimindex.com/methodology/changelog): every scored/tiered/valued rule change, dated and versioned.
- [Tier list](https://www.stimindex.com/tier-list): every scored product ranked and filterable.
- [Awards](https://www.stimindex.com/awards): best-in-class picks by category (and the Hall of Shame).
- [Compare](https://www.stimindex.com/compare): head-to-head product comparisons.

## Data

- [Products (JSON)](https://www.stimindex.com/data/products.json): the full scored catalog — tier, formula score, caffeine, price per effective serving, testing tier, methodology version.
- [Products (CSV)](https://www.stimindex.com/data/products.csv): the same data as CSV.

## Notes

- Not medical advice. Talk to your doctor before using stimulants.
- We don't earn a commission from store links on this site.