A vine supplying steroidal saponins traditionally and most consistently linked with libido and drive.
Tribulus Terrestris is a spiny vine used across traditional wellness systems, supplying steroidal saponins — chiefly protodioscin — which is why it appears in nearly every male-vitality formula.
It's included for libido and drive, working alongside Tongkat Ali as part of the formula's hormonal-and-libido layer.
Trial evidence is stronger for libido than for a measurable rise in testosterone — a distinction the supplement category doesn't always make clear.
This describes general research on Tribulus Terrestris itself, not the finished Primordial Vigor X product, which hasn't been the subject of its own clinical trial. See the full ingredients list or the formula overview for more.