A carboline derivative and PHOSPHODIESTERASE 5 INHIBITOR that is used primarily to treat ERECTILE DYSFUNCTION; BENIGN PROSTATIC HYPERPLASIA and PRIMARY PULMONARY HYPERTENSION.
A carboline derivative and PHOSPHODIESTERASE 5 INHIBITOR that is used primarily to treat ERECTILE DYSFUNCTION; BENIGN PROSTATIC HYPERPLASIA and PRIMARY PULMONARY HYPERTENSION.