title: [Daily sildenafil tablet at night, can erectile impotence be cured permanently this way?].
mesh_terms: D001783:Blood Flow Velocity / Q000187:drug effects; D004334:Drug Administration Schedule; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D008134:Long-Term Care; D008297:Male; D010410:Penile Erection / Q000187:drug effects; D010413:Penis / Q000098:blood supply; D010879:Piperazines / Q000008:administration & dosage*; D011687:Purines; D055502:Secondary Prevention; D000068677:Sildenafil Citrate; D013450:Sulfones; D014665:Vasodilator Agents / Q000008:administration & dosage*
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D014665:Vasodilator Agents; D000068677:Sildenafil Citrate