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sildenafil citrate

[ sil-den-uh-fil ]

noun

, Pharmacology.
  1. a white crystalline powder, C 22 H 30 N 6 O 4 S, that temporarily normalizes erectile function of the penis by blocking an enzyme known to inhibit the production of a chemical that causes erections: used in the form of a pill to treat impotence.

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Example Sentences

And with sildenafil citrate going generic in three years, Pfizer will soon lose sole ownership over the Viagra formula.

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