Ʊ ߱ ġῡ Ǵ , ڱ ߱⸦ ϴ. 1998 FDA , ǰ ȸϰ ֽϴ.
Ʊ ۿ ַ PDE5 ȿ ̷ϴ. ȿҴ Ű ϸ, Ʊ ̸ Ͽ Ȯŵϴ. , ڱ 帣 Ǿ ߱Ⱑ ˴ϴ.
Ʊ ǻ ֽϴ. , ȯ ִ ǻ ؾ ϸ, ٸ ȣۿ뵵 ؾ մϴ. , Ʊ ڱ ȿ Ƿ, ܼ 븸δ ߱Ⱑ ̷ ʽϴ.
Ű: Ʊ, ߱, ǰ