Pregnenolone is a steroid precursor hormone having effects on the nervous system; enhances memory; improves sleep, stress response, and performance; lightens depression; lessens visible signs of skin wrinkling; improves sexual function. Immune Enhancing Supplement. 100% Pharmaceutical Grade. Antioxidant Enriched.*  Note: Unless otherwise noted, this product has not been evaluated by the Food and Drug Administration. Our natural products are not intended to diagnose, treat, cure, or prevent any disease.