💊Testosterone Support Ingredients, Ranked by Evidence
What counts: Strength of clinical evidence supporting the ingredient's ability to raise testosterone levels
Ashwagandha (KSM-66)
Small trials show modest T increases and better strength with training, mainly in stressed men — the most defensible herb on the list.
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0Restores testosterone only if you're actually deficient; no effect if intake is already adequate.
added by Yourlist Editorialzinc
0Vitamin D3
Same pattern as zinc — helps only if you're deficient, mixed evidence otherwise.
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0Fenugreek
Small increases shown in some trials and a meta-analysis, though results vary by product.
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0Tongkat ali / shilajit
Weak-to-modest positive trials, often seen in men who started low-normal or deficient.
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0Only short-term free-testosterone data from very small studies — the weakest evidence of the group.
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