Viagra
(sildenafil) works by relaxing the blood vessels to the penis so allowing better
blood flow and takes from 20 to 60 minutes to get to work but may take longer to work
if taken with a heavy meal as this stops the medicine getting into the blood stream.
It remains effective for 4 to 6 hours.
Viagra (sildenafil) works in most men no matter how long they have had erection
problems, how bad their problems are, how old they are or what caused the problems.
It has been studied in thousands of patients and used successfully by millions. About
20% of men with erection problems will not respond to Viagra.
The side effects of Viagra are usually mild to moderate and last a short time but it
is important to take the recommended dose. The most common side effects are a headache
and facial flushing. Less common effects include indigestion, dizziness, stuffy nose
and visual effects (a blue coloured tinge to vision and increased brightness of
light or blurring).
Viagra (Sildenafil) should only be taken if prescribed by a registered doctor. This is
because Viagra can be dangerous if you take it at the same time as certain other
medicines including some that are used to treat chest pain (angina). In addition, men
with severe heart or liver problems or have had a recent stroke, heart attack, or who
have low blood pressure should not take it.
The usual starting dose for Viagra is 50mg. If the desired effect is experienced but
side effects are a problem then a 25mg tablet should be tried. If 50mg is not
effective and side effects are not problematic then a 100mg dose should be tried after
consultation with your doctor or pharmacist. You should not take more than 100mg of
Viagra a day as this will not give a greater effect but does increase the risk of side
effects.