The Stack Report
What real stacks look like, graded.
Every run of The Stack Audit adds one anonymous data point: the ingredients in someone's actual stack, nothing else. This page publishes the aggregates — which ingredients show up most, and how often a stack contains something we graded out.
Anonymous by design: the audit stores ingredient selections only — no emails, no accounts, no identity. Aggregates describe this site's visitors, not the population. Educational content, not medical advice.
147 stacks audited so far, averaging 1.7 ingredients each. 0% contained at least one ingredient we've graded out of our library.
| Ingredient | Evidence grade | Share of audited stacks |
|---|---|---|
| Alpha-GPC | Evidence: Grade C | 71% |
| Citicoline | Evidence: Grade B | 69% |
| 5-HTP | Evidence: Grade C | 29% |
| Acetyl-L-Carnitine | Evidence: Grade C | 1% |
| Cocoa Flavanols | Evidence: Grade B | 1% |
| L-Theanine | Evidence: Grade B | 1% |
| Magnesium Glycinate | Evidence: Grade C | 1% |
| Maritime Pine Bark | Evidence: Grade C | 1% |
| Phosphatidylserine | Evidence: Grade C | 1% |
| PQQ | Evidence: Emerging | 1% |
| Sceletium Tortuosum | Evidence: Emerging | 1% |
Updated hourly from live audits. Grades follow The Evidence Standard — the same rubric applied to every ingredient on this site, including the ones that failed it.