title: Sildenafil.
authors.forename: C G
authors.initials: CG
authors.lastname: McMahon
mesh_terms: D015106:3',5'-Cyclic-GMP Phosphodiesterases / Q000037:antagonists & inhibitors*; D001315:Australia; D011307:Drug Prescriptions; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D007342:Insurance Benefits; D009313:National Health Programs; D010879:Piperazines / Q000627:therapeutic use*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate; D015106:3',5'-Cyclic-GMP Phosphodiesterases