Saw palmetto (Serenoa repens) is the most-studied botanical for age-related prostate changes, and it's included in this formula for that reason rather than for a direct effect on testosterone.
It's studied for its interaction with 5-alpha-reductase, the enzyme that converts testosterone into DHT — though the largest clinical trials found it performed no better than placebo for urinary symptoms specifically.
Its presence here is what makes this a vitality formula relevant past 40, not just a libido blend aimed at younger men.
In Primordial Vigor X: Saw Palmetto Berries is one of three named botanicals in the 870 mg serving — see the full breakdown on our how it works page.