Viagra wears off after two years

BMJ 2001; 323 doi: (Published 08 September 2001) Cite this as: BMJ 2001;323:530
  1. Scott Gottlieb
  1. New York

    The anti-impotence drug sildenafil (Viagra) may stop working for many patients after two years, the results of a study from the United States have suggested.

    Dr Rizk …

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