sildenafil definition by Wordo

Noun

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

sub

>

to

treat

erectile dysfunction

in

males

,

that

by

suppressing

a

phosphodiesterase

enzyme

also

suppresses

the

enzyme

'

s

inhibitory

effect

on

the

hormone

,

and

that

enables

the

cyclic

GMP

produced

during

to

initiate

the

muscular

and

vascular

changes

which

produce

an

erection

.

It

is

marketed

under

the

trademarks

'''

Revatio

'''

and

'''

Viagra

'''.