A method of treating preeclampsia including administering a therapeutically effective dose of resibufagenin to a patient having preeclampsia. Effecting the determination of the presence of preeclampsia may be by determining whether there has been a substantial elevation in marinobufagenin which may be blood-derived or urine-derived and if such elevation does exist, concluding that preeclampsia does exist. The method may advantageously be practiced by employing urine, blood serum or blood plasma as the body specimen containing the protein in determining whether a patient has preeclampsia. In another embodiment, bufodienolide derivatives other than resibufagenin may be employed in lieu thereof or in combination therewith. In another embodiment, resibufagenin analogues may be employed in the treatment of preeclampsia.
