Independent supplement ratingsUS and Canada · Updated weekly
A ratings desk for a category that has spent thirty years grading its own homework.
A ratings desk for a category that has spent thirty years grading its own homework.
Caplets · 30 servings · two blends
Blends hide the per-ingredient dose
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The cheapest booster in this ranking, and to its credit the front of the pack names two real amounts — 385 mg of rhodiola extract and 100 mg of boron citrate per serving. Turn it over and the Supplement Facts panel routes the actives through two proprietary blends, an “Anti-Catabolic Complex” and a “Free (Active) Testosterone Stimulator”, whose per-ingredient amounts are not disclosed. The pack promises more active testosterone in seven days; the label is built so that you cannot check the claim.
Two undisclosed blends, plus calcium and sodium declared individually as the rules require. The boron figure needs reading carefully: 100 mg is the weight of boron citrate, the compound, not of elemental boron — and the small studies on boron use roughly 6–10 mg of the element. Comparing the front-of-pack number with the research is comparing two different things. Rhodiola at 385 mg is a real amount, but rhodiola is an adaptogen with no established effect on testosterone.
Hard to recommend, though it's cheap enough that the downside is small. If the boron is what interested you, buy boron on its own at a disclosed elemental dose for less than this costs. What the boron evidence shows →
Reviewed and fact-checked by the NFS editorial team · Last updated 12 Jul 2026