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Erectile Dysfunction

Side Effects

As with all medicines, you may experience side effects when taking Viagra. Viagra side effects range from mild to moderate effects that can be short lived including chest pains during or after intercourse, headaches, facial flushing, indigestion, effects on vision (including colour tinge to vision, light sensitivity, blurred vision or reduced sharpness of vision) stuffy nose and dizziness.

Occasionally Viagra side effects may include allergic reactions such as sudden wheeziness, difficulty in breathing or dizziness, swelling of the eyelids, face, lips or throat.

Contact your GP immediately if you experience any such reactions. For the full list of side effects please refer to the patient leaflet that can be found here.

Inevitably Viagra drug interactions exist. Therefore, please be aware that if you are taking medicines known as nitrates, you should not take Viagra, as the combination of these products may cause a potentially dangerous decrease in your blood pressure.

If you are taking protease inhibitors, for example, for the treatment of HIV, your doctor may start you on the lowest dose (25mg) of Viagra.

Other known Viagra drug interactions have occurred in patients who take alpha-blocker therapy for the treatment of high blood pressure or prostate enlargement. They have been known to have experienced dizziness or light-headedness which may be caused by low blood pressure upon sitting or standing up quickly.

So please be aware that if you are taking any medications, interactions when taking Viagra may occur. Most users however experience only mild, short lived side effects and are able to lead healthier sex lives.