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 dopamine-precursor and serotonin-precursor strategies can produce unpredictable mood, sleep, nausea, or blood pressure effects.
Mechanism. Competing monoamine precursor pathways and overlapping nausea/CNS adverse effects.
Recommendation. Avoid unless supervised, especially with antidepressants, stimulants, or Parkinson medications.
Stack Score
How it moves the number.
Effect on the composite score
If both 5-HTP and Mucuna Pruriens 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- 1Pereira AV et al. Mucuna pruriens systematic review. Parkinson's Disease. 2025.Needs sourceNo link