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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 | Vitamin B12 |
|---|---|---|
| Support mood — Depression − better · points (PHQ-9) | −5.3best weak | −1.6 weak |
200mg
Any time
Suntheanine® capsules or powder
500-1000mcg daily for maintenance; higher for deficiency
Morning · with food (preferred)
Methylcobalamin (sublingual)
30-60 minutes
30-60 minutes
30-60 minutes
2-4 weeks
4-8 weeks
Weeks to months
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