Viagra UK

Viagra Information

Viagra (Sildenafil) is approved for the treatment of men who have difficulty having and maintaining an erection (impotence). Sildenafil Citrate is the active chemical that relaxes muscles in the penis therefore improving blood flow.

Viagra comes as a tablet to take by mouth. It should be taken as needed about 1 hour before sexual activity. However, it can be taken anytime from 4 hours to 30 minutes before sexual activity. Viagra should not be taken more than once a day. Do not take more or less of it or take it more often than prescribed by your doctor.

Viagra side effects

All medicines can cause some side effects. The most commonly experienced side effects are headache, upset stomach, and facial flushing. Less common side effects include bluish vision, blurred vision, or sensitivity to light. These side effects are temporary and only last a few hours. If you experience nausea or an erection that lasts longer than 4 hours, stop taking Viagra and seek medical help.

In rare instances, men have reported an erection that lasts many hours. You should call a doctor immediately if you ever have an erection that lasts more than 4 hours. If not treated right away, permanent damage to your penis could occur. Heart attack, stroke, irregular heart beats, and death have been reported rarely in men taking This meddication. Most, but not all, of these men had heart problems before taking this medicine. It is not possible to determine whether these events were directly related to Viagra.

The most common side effects are:

• Headache
• Visual changes like blurred vision
• Dyspepsia
• Facial flushing
• Nasal Congestion
• Upset Stomach
• Rhinitis
• Diarrhea
• Increased sensitivity to light

Side effects will occur more often as the dosage increases. The most serious reported side effect is blue tinted vision. Viagra can block the breakdown of cyclic GMP in the cone cells of the retina leading to perception of blue. This meddication can also cause dilation of blood vessels in other body parts, causing fainting and headaches.