Tribulus terrestris is commonly claimed to have aphrodisiac properties. There is indeed some evidence that it can improve sexual desire, increase sexual satisfaction, and reduce symptoms of erectile dysfunction (ED) in men[1][2][3][4] and enhance libido in women.[5][6] These effects seem to be most prominent in people who are experiencing some form of sexual dysfunction. Current evidence fails to support that claim that Tribulus terrestris elevates testosterone levels.[7][8]
Tribulus terrestris may also have benefits for reducing blood pressure and cholesterol[9][10] and for reducing blood glucose in people with diabetes,[11][12] though evidence is limited.