title: Enjoying lifelong sexual vitality.
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000628:therapy; D005260:Female; D006801:Humans; D008297:Male; D010726:Phosphodiesterase Inhibitors / Q000627:therapeutic use*; D010879:Piperazines / Q000627:therapeutic use*; D011687:Purines; D012735:Sexual Dysfunction, Physiological / Q000209:etiology / Q000523:psychology / Q000628:therapy*; D012749:Sexually Transmitted Diseases / Q000517:prevention & control; D000068677:Sildenafil Citrate; D013450:Sulfones
chemical_list: D010726:Phosphodiesterase Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate