From the databaseWhat the row says.
Every entry follows the same shape: what is happening, the mechanism, and the recommendation.
Scope
Supplement × Supplement
Last verified
June 4, 2026
CautionInsufficient evidence
What is happening. Combining two nootropic products makes headache, dizziness, insomnia, or adverse neurologic effects harder to detect.
Mechanism. Overlapping CNS-active nootropic use with limited direct interaction evidence.
Recommendation. Do not start together; avoid in seizure disorder or before surgery.
Stack Score
How it moves the number.
Effect on the composite score
If both Ginkgo Biloba and Noopept are in the same stack, this pair applies −5 to your Stack Score (per scored caution row).
The full algorithm, the clamping rules, and four worked stacks are at /methodology/stack-score.
SourcesSources, by evidence tier.
Every claim on this page is cited. PMIDs link straight to PubMed.
Reference material
1- 1Neznamov GG and Teleshova ES. Comparative studies of Noopept and piracetam. Neuroscience and Behavioral Physiology. 2009.Needs sourceNo link