Term: sildenafil
IPA: sɪlˈdɛn.ə.fɪl

==English==
[[File:Sildenafil structure.svg|thumb|300px|Chemical structure of '''sildenafil''']]
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===Etymology===
Probably from {{af|en|sulfonyl|alt1=s(ulfon)yl|pyrimidine|alt2=-dena-|t2=alteration of ''(pyrimi)dine''|phenyl|alt3=ph(en)yl}}.

===Pronunciation===
* {{IPA|en|/sɪlˈdɛn.ə.fɪl/}}

===Noun===
{{en-noun|-|s}}

# {{lb|en|pharmaceutical drug}} A drug that is used in the form of its [[citrate]] C<sub>22</sub>H<sub>30</sub>N<sub>6</sub>O<sub>4</sub>S·C<sub>6</sub>H<sub>8</sub>O<sub>7