Botanical guide · Ingredient reference

A tribulus extract improved sexual-function scores in one trial

Questionnaire improvement is not evidence that the product raises testosterone or builds muscle.

Read the evidence ↓

Supplement Science Insights Editorial Team

Published September 23, 2026

The study and its comparison

A blinded randomized trial assigned 180 men with mild or moderate erectile dysfunction to a standardized tribulus extract or placebo for twelve weeks. Eighty-six men in each group completed treatment. [1]

The reported intention-to-treat difference in the sexual-function score was 2.70 points, favoring the extract. Selected satisfaction and desire measures also improved. Adverse-event rates did not significantly differ. [1]

What the finding establishes

This result concerns a particular extract and selected patients, not every tribulus product. It does not establish comparative effectiveness against standard erectile-dysfunction treatments or a testosterone-boosting mechanism. An author worked in the manufacturer’s medical and regulatory department; complete funding was not established from the abstract. Longer-term safety remains outside this trial. [1]

A hypothetical distinction

Imagine a questionnaire improves without a demonstrated hormone mechanism. The questionnaire result should keep its own name.

Interpretation checklist — A tribulus extract improved sexual-function scores in one trial
DetailInterpretation
Measured outcomeKeep the endpoint specific
Study preparationNot every retail product
Remaining uncertaintyNot resolved by a mechanism
A tribulus extract improved sexual-function scores in one trial — original article outline diagram
Original editorial diagram of this article’s sections; no product photograph or clinical finding is depicted.

Sources for this article

  1. Evaluation of the efficacy and safety of Tribulus terrestris in male sexual dysfunction-A prospective, randomized, double-blind, placebo-controlled clinical trial.
    Source consulted: 2026-09-19. This is a reference resource, not a claim that we conducted the studies or tested a product.