title: Viagra and protease inhibitors.
mesh_terms: D001794:Blood Pressure / Q000187:drug effects; D004347:Drug Interactions; D007172:Erectile Dysfunction / Q000188:drug therapy; D015658:HIV Infections / Q000188:drug therapy; D017320:HIV Protease Inhibitors / Q000378:metabolism*; D006801:Humans; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000009:adverse effects / Q000378:metabolism* / Q000627:therapeutic use; D010879:Piperazines / Q000009:adverse effects / Q000378:metabolism* / Q000627:therapeutic use; D011687:Purines; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D017320:HIV Protease Inhibitors; D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate