Det aktive indholdsstof i Revatio, sildenafil, tilhører en gruppe af lægemidler, som kaldes hæmmere af fosfodiesterase type 5 (PDE5), hvilket betyder, at det hæmmer PDE5- enzymet.
The active substance in Revatio, sildenafil, belongs to a group of medicines called ‘ phosphodiesterase type 5 (PDE5) inhibitors’, which means that it blocks the PDE5 enzyme.