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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 | Tribulus | Zinc |
|---|---|---|
| Libido & male vitality — Total Testosterone + better · ng/dL | +144.7 weak · CI ∋ 0 | +7.7 preliminary · CI ∋ 0 |
750mg
With meals · with food
Extract standardized to 45-60% saponins (protodioscin)
20mg
Evening · with food (preferred)
Zinc picolinate or zinc citrate
2-4 weeks
4-8 weeks
N/A
2-4 weeks
2-4 weeks
4-8 weeks
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