NusaPure Tribulus Terrestris 50:1 Extract, 1000 mg | Veggie Caps | 95% Steroidal Saponins | Non-GMO, Bioperine Review

This product gives 1000 mg of Tribulus extract a day, above the 792 mg that worked in studies. The best single trial, in 180 men with mild to moderate erection problems, found 12 weeks of Tribulus extract improved sexual function scores, including desire, more than placebo, and it was well tolerated ^[1]. In 70 older men with erection problems and low testosterone, Tribulus taken for 3 months raised testosterone and improved erection scores ^[2]. A 2023 review that pooled trials found Tribulus improved male sexual function ^[3]. Two other positive trials used combination products, so they do not show what Tribulus does alone ^[4][5]. The evidence is mixed. A 2026 review of 14 trials in 1227 men found the evidence for Tribulus on its own insufficient ^[6]. A 2025 review rated the evidence as low. A small trial of 30 men found no benefit after 30 days. Most of the research is in men with erection problems, not in healthy men looking for more desire. The black pepper extract is added to help absorption and has no studies here for libido. Animal and cell studies are never counted.

The panel is split on tribulus, the main ingredient, and leans cautious: of the seven who spoke about it, three warn against it, two recommend it, and two are neutral, with one of those having stopped using it. Those who warn say it does not raise testosterone, calling the evidence very weak, and one says it does too little to build muscle. Those who recommend it take it mainly for libido and sex drive, or as an herbal way to raise testosterone, including for women, and one gave a dose of 600 milligrams daily. One panelist advised swapping it for another herb because of its negligible effect on testosterone, and another said it might work only if the product is high quality with enough saponins, and even then the effect may be brief. Piperine is a smaller ingredient in this product; the panel mostly sees it as a way to boost absorption, though a few caution that high doses may irritate the gut, and that it can interact with meds.

Combine with: Tribulus terrestris is traditionally used to support libido and sexual desire in men, though clinical evidence is modest and it does not reliably raise testosterone in healthy men. Piperine (BioPerine) may improve absorption of the saponins. For a stronger stack, consider Tongkat Ali (Eurycoma longifolia) or KSM-66 Ashwagandha, which have better human data for libido, stress reduction and healthy testosterone. Fenugreek extract (e.g., Testofen) may support desire and vigor. Zinc (15-30 mg) and vitamin D3 (1000-2000 IU, ideally if levels are low) cover nutrient cofactors for testosterone production. Maca root is a well-tolerated addition for sexual desire. For erection quality and blood flow, L-citrulline or L-arginine may add support. Avoid combining with other black pepper extracts at high doses, and consult a healthcare provider if you take medications for blood pressure, diabetes or blood thinning, since both tribulus and piperine may influence drug metabolism and blood sugar.