Supports Longevity. HPLC Tested for Potency & Purity. DHEA (dehydroepiandrosterone) is produced in the adrenal glands from pregnenolone and eventually converted into testosterone estrone and estradiol. As we age decreasing levels of DHEA could be pivotal to the onset of decreased health. DHEA supplementation has shown an ability to return levels to those experienced in younger years.