If you've looked at more than one men's vitality supplement, you've seen tribulus terrestris before — it's close to a default inclusion in this entire product category.
That ubiquity isn't meaningless; it reflects a long research trail specifically around testosterone support and strength, even if results in individual studies vary.
Here it works alongside maca root on the hormone-balance side of the formula, separate from the energy or circulation ingredients.
In this formula: Tribulus Terrestris is one of six named ingredients — see the full division of labor on our how it works page.