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How Does It Work?

Tribulus contains a mixture of different compounds that may be responsible for the medicinal properties of the plant. The root, stem, and fruit contain these compounds. Early research suggests that the plant may increase the level of various hormones (including testosterone and dehydroepiandrosterone, or DHEA) in rats. Although studies have not shown similar effects in humans, people use the supplement for sexual problems and for bodybuilding based on the assumption that it increases hormone levels.
Tribulus may help relax the arteries of the heart. It also may lower blood pressure by inhibiting angiotensin-converting enzymes (much like ACE inhibitor medications). Research also suggests that the plant might have a diuretic effect (it may increase urine production), which may be why some people use if for various kidney problems.

Is Tribulus Effective?

In general, there is not enough scientific evidence to suggest that Tribulus really is effective for most uses (see Does Tribulus Terrestris Work? for more information).

Dosing Information

There is no established standard dose for Tribulus, although general dosing guidelines may be obtained from a few clinical studies that evaluated certain uses of the supplement (see Tribulus Dosage for more information).

Tribulus Drug Interactions

Theoretically, Tribulus may interact with a few medications (see Drug Interactions With Tribulus).
5 Questions to Ask Your Doctor About ED

Tribulus Herbal Supplement

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