What supplements boost testosterone?

Supplements discussed as potentially boosting testosterone include Tongkat Ali, Fadogia agrestis, Tribulus terrestris, boron, and shilajit; the evidence and effects vary, and some may chiefly affect free testosterone or related reproductive hormones.

• Tongkat Ali: May increase total and free testosterone and has been associated with libido and fertility-related effects. Reported doses include 400–800 mg daily in one discussion, while another gives a broader 300–1,200 mg range. 1 2
• Fadogia agrestis: May increase luteinizing hormone (LH), which can stimulate testosterone release; it may be a better fit when LH is low. Long-term safety evidence is limited, so the discussion emphasizes caution and monitoring. 3 4
• Tribulus terrestris: Is often marketed to raise testosterone, but whether it meaningfully does so is unclear. 5
• Boron: May temporarily lower SHBG, which can increase the amount of free testosterone available. 6
• Shilajit: Is mentioned in relation to fertility and sperm health, but the cited discussion does not establish that it boosts testosterone. 7