Noun
A
drug
,
C
<
sub
>
22
sub
>
H
<
sub
>
19
sub
>
N
<
sub
>
3
sub
>
O
<
sub
>
4
sub
>,
that
is
used
to
treat
erectile dysfunction
and
benign prostatic hyperplasia
and
functions
similarly
to
sildenafil
.
It
is
marketed
under
the
trademark
'''
Cialis
'''.