New drug for erectile dysfunction boon for many, "viagravation" for some.
Lamberg
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D004791:Enzyme Inhibitors / Q000627:therapeutic use*; D007172:Erectile Dysfunction / Q000188:drug therapy* / Q000523:psychology*; D006801:Humans; D008297:Male; D010879:Piperazines / Q000627:therapeutic use*; D011687:Purines; D019529:Sexuality / Q000523:psychology*; D000068677:Sildenafil Citrate; D013450:Sulfones
D004791:Enzyme Inhibitors; D010879:Piperazines; D011687:Purines; D013450:Sulfones; D000068677:Sildenafil Citrate