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A-F grade per outcome, combining overall evidence with goal-specific relevance. A = strong evidence; F = insufficient. Hover a badge for details.
Direct side-by-side from the meta-analysis. Each row is an outcome where ≥2 of your selected supplements have pooled data. Best effect per row highlighted.
| Outcome | 5-HTP | Tryptophan |
|---|---|---|
| Support mood — Depression − better · points (PHQ-9) | −3.8best weak | −2.8 weak · CI ∋ 0 |
| Fall asleep faster — Sleep Onset Latency − better · minutes | −13.2 preliminary · CI ∋ 0 | −7.5 weak · CI ∋ 0 |
| Improve deep sleep quality — Sleep Quality Psqi − better · PSQI points | −2.8best weak | −0.9 weak |
200mg
Before bed
Capsules
1500mg
Before bed
L-Tryptophan capsules
2-4 weeks
1-2 weeks
2-4 weeks
30-60 minutes
1-2 weeks
1-2 weeks
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