title: [Sildenafil (Viagra). Hormonal properties, indications and legal problems].
authors.affiliation: Urologische Abteilung, Krankenhaus St. Josef, Regensburg.
authors.forename: T
authors.initials: T
authors.lastname: Ullrich
authors.forename: E
authors.initials: E
authors.lastname: Haen
mesh_terms: D000818:Animals; D000075202:Contraindications; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000503:physiopathology; D006801:Humans; D007880:Legislation, Drug; D008297:Male; D009130:Muscle, Smooth / Q000187:drug effects / Q000502:physiology; D010410:Penile Erection / Q000187:drug effects / Q000502:physiology*; D010726:Phosphodiesterase Inhibitors / Q000494:pharmacology; D010879:Piperazines / Q000494:pharmacology / Q000627:therapeutic use*; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate