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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 | L-Theanine | Melatonin |
|---|---|---|
| Fall asleep faster — Sleep Onset Latency − better · minutes | −4.5 weak | −17.7best weak |
| Improve deep sleep quality — Sleep Quality Psqi − better · PSQI points | −1.1best weak | +0.1 weak · CI ∋ 0 |
200mg
Any time
Suntheanine® capsules or powder
1mg
Before bed
Immediate-release tablet or sublingual
30-60 minutes
30-60 minutes
30-60 minutes
Same night
1-3 days
Next morning
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