From Citizendium, the Citizens' Compendium
- See also changes related to Sildenafil, or pages that link to Sildenafil or to this page or whose text .
- Phosphodiesterase : A class of enzymes that catalyze the hydrolysis of one of the two ester bonds in a phosphodiester compound.
- Phosphodiesterase inhibitor : Add brief definition or description
- Phosphodiesterase type 5 inhibitor : Add brief definition or description
- Erectile dysfunction : Inability to obtain or maintain an erect penis.