Before and beyond Viagra.
van der Linde
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D004791:Enzyme Inhibitors / Q000493:pharmacokinetics / Q000627:therapeutic use; D007172:Erectile Dysfunction / Q000188:drug therapy*; D005260:Female; D006801:Humans; D007267:Injections / Q000379:methods; D008297:Male; D010879:Piperazines / Q000493:pharmacokinetics / Q000627:therapeutic use; D011687:Purines; D012735:Sexual Dysfunction, Physiological / Q000188:drug therapy; D000068677:Sildenafil Citrate; D013450:Sulfones
D004791:Enzyme Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate