pregnenolone (disambiguation) pregnenolone (disambiguation) pregnenolone may refer to: pregnenolone (pregn-5-en-3β-ol-20-one) pregnenolone (medication) 3β-dihydroprogesterone (pregn-4-en-3β-ol-20-one) 3α-dihydroprogesterone (pregn-4-en-3α-ol-20-one)