title: New sex-aid drug's effects last longer.
mesh_terms: D002243:Carbolines / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use*; D007172:Erectile Dysfunction / Q000188:drug therapy*; D006801:Humans; D007093:Imidazoles / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D008297:Male; D010879:Piperazines / Q000008:administration & dosage / Q000009:adverse effects / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D002243:Carbolines; D007093:Imidazoles; D010879:Piperazines