HPL Tested for Potency & Purity. Supports Longevity. Made in USA. DHEA (dehydroepiandrosterone) is produced in the adrenal glands from pregnenolone and converts into testosterone estrone and estradiol. As we age our DHEA levels decrease becoming a factor in our overall health status. DHEA supplementation has shown an ability to support circulating DHEA concentrations similar to those experienced in younger years.