Side Effects

Just like many medicines, Viagra can cause some side effects. These effects are usually mild to moderate and usually don’t last longer than a few hours. Some of these side effects are more likely to occur with higher doses.

The most common side effects of Viagra are headache, flushing of the face, and upset stomach. Less common side effects that may occur are temporary changes in colour vision, eyes being more sensitive to light, or in extreme circumstances blurred vision.
If you experience chest pain, nausea, or any other discomforts during sex it is recommended that you consult your doctor immediately.
In some rare cases, men have reported an erection that lasts for many hours and in this instance you should call a doctor immediately if your erectionlasts for more than four hours.

If you use nitrate drugs, often used to control chest pain (also known as angina), don’t take Viagra.  The information supplied on this web site is not designed to replace professional medical advice. Viagra Guide takes no responsibility for any external links and any information provided here is intended as such.