Vardenafil er en potent og selektiv hæmmer af cGMP- specifik phosphodiesterase type 5 (PDE5), den mest markante PDE i human corpus cavernosum.
Vardenafil is a potent and selective inhibitor of the cGMP specific phosphodiesterase type 5 (PDE5), the most prominent PDE in the human corpus cavernosum.