is trademarked as Viagra, is an oral drug which may
improve the flow of blood to the penis when the flow
of blood has been altered as a result of prostate cancer
treatment. Sildenafil was originally developed as a
drug that was hoped to improve blood flow to the heart.
What researchers found was sildenafil was much more
effective in improving blood flow to the penis. Sildenafil
is a medical treatment known as a PDE-5 inhibitor used
for sexual impotence that is caused biological factors.
Most prostate cancer treatments commonly cause impotence
as a side effect because some treatments shut off veins
that lead into the penis. Sildenafil works by relaxing
the smooth muscles in the penis and allowing more blood
to flow in. Sildenafil is not an aphrodisiac and will
not work as an potency enhancer without proper arousal.
Men who have undergone prostate cancer treatment and
who are anxious about engaging in sexual relations again
may not benefit from sildenafil. Changes in biological
function are not always responsible for impotence.