VIAGRA contains the active substance sildenafil, which belongs to a group of medicines

called phosphodiesterase type 5 (PDE5) inhibitors. It works by dilating the blood vessels in the penis, allowing blood flow when sexually stimulated. VIAGRA will only help you get an erection if you are sexually stimulated.



VIAGRA is indicated for the treatment of erectile dysfunction in adult men, sometimes referred to as impotence. This happens when a man cannot get or maintain a firm erection suitable for satisfactory sexual activity.
2. What you need to know before you take VIAGRA

Do not take VIAGRA



If you are allergic to sildenafil or any of the other ingredients of this medicine (listed in section 6).



If you are taking medicines called nitrates, as the combination can lead to a dangerous drop in your blood pressure. Check with your doctor if you are taking any of these medications, which are often given to relieve angina pain (or “chest pain”). If you are not sure, check with your doctor or pharmacist.



If you are using any of the medicines called nitric oxide donors such as amyl nitrite ("poppers"), as the combination can lead to a dangerous drop in your blood pressure.



If you are taking riociguat. This medicine is used to treat pulmonary arterial hypertension (ie, high pressure in the lungs) and chronic thromboembolic pulmonary hypertension (ie, high pressure in the lungs caused by blood clots). PDE5 inhibitors, such as Viagra, have been shown to increase the hypotensive effect of this medicine. If you are taking riociguat or are not sure, talk to your doctor.



If you have a serious heart or liver problem.



If you have recently had a stroke or heart attack, or if you have low blood pressure.



If you suffer from a rare hereditary eye disease (such as retinitis pigmentosa).



If you have previously experienced vision loss due to non-arteritic anterior ischemic optic neuropathy (NAION).



Warnings and precautions

Talk to your doctor, pharmacist or nurse before taking VIAGRA:

If you have sickle cell anemia (an abnormality of red blood cells), leukemia (cancer of the blood cells), multiple myeloma (cancer of the bone marrow)



If you suffer from a deformity of the penis or Peyronie's disease.



If you have heart problems. Your doctor should carefully check whether your heart can handle the extra stress of having sex.



If you currently have a stomach ulcer or bleeding problems (such as haemophilia).



If you experience sudden decrease or loss of vision, stop taking VIAGRA and contact your doctor immediately.



VIAGRA is not advised to be used simultaneously with any other oral or topical treatment for erectile dysfunction.



You should not take VIAGRA with treatments for pulmonary arterial hypertension (PAH) that contain sildenafil or any other PDE5 inhibitor.



You should not take VIAGRA if you do not have erectile dysfunction.



VIAGRA is not indicated for use in women.



Special considerations in patients with kidney or liver problems

You should tell your doctor if you have kidney or liver problems. Your doctor may decide to lower your dose.



children and adolescents

VIAGRA is not indicated for use in persons under 18 years of age.



Using VIAGRA with other medicines

Tell your doctor or pharmacist if you are taking, have recently taken or might take any other medicines.



VIAGRA tablets may interfere with some medicines, especially those used to treat chest pain. In case of a medical emergency, you should tell your doctor, pharmacist or nurse that you are taking VIAGRA and when you took it. You should not take VIAGRA with other medicines unless your doctor advises you to do so.



You should not take VIAGRA if you are taking medicines called nitrates, as the combination of these medicines can lead to a dangerous drop in your blood pressure. Always tell your doctor, pharmacist or nurse if you are taking any of these medicines, which are often used to relieve angina pain (or "chest pain").



You should not take VIAGRA if you are taking medicines called nitric oxide donors, such as amyl nitrite ("poppers"), as the combination of these medicines can also lead to a dangerous drop in your blood pressure.



Tell your doctor or pharmacist if you are taking riociguat.



If you are taking medicines known as protease inhibitors, such as those used to treat HIV, your doctor may recommend that you start treatment with the lowest dose (25 mg) of VIAGRA.



Some patients receiving an alpha-blocker, a medicine used to treat high blood pressure or an enlarged prostate, may experience dizziness or light-headedness which may be caused by a drop in blood pressure when sitting down or standing up quickly. Some patients have experienced these symptoms when taking VIAGRA with alpha-blockers. This is most likely to happen within 4 hours of taking VIAGRA.

In order to decrease the chance of these symptoms occurring, you should be receiving your daily dose of the alpha-blocker on a regular basis before starting VIAGRA. Your doctor may direct you to start treatment with the lower dose (25 mg) of VIAGRA.



Using VIAGRA with food, drink and alcohol

VIAGRA can be taken with or without food. However, you may find that VIAGRA takes a little longer to work if taken with a large meal.



Drinking alcohol can temporarily impair your ability to get an erection. Therefore, to get the maximum benefit from the medicine, it is advised not to drink large amounts of alcohol before taking VIAGRA.



Pregnancy, lactation and fertility

VIAGRA is not indicated for use in women.



Driving and using machines

VIAGRA can cause dizziness and affect vision. You should know how you react to VIAGRA before driving or operating machinery.



VIAGRA contains lactose

If you have been told by your doctor that you have an intolerance to some sugars, such as lactose, contact your doctor before taking VIAGRA.



VIAGRA contains sodium

This medicine contains less than 1 mmol sodium (23 mg) per tablet; that is, essentially "sodium-free".
3. How to take VIAGRA

Follow exactly the directions for administration of this medication given by your doctor or pharmacist. If in doubt, ask your doctor or pharmacist again. The recommended starting dose is 50 mg.



VIAGRA should not be taken more than once a day.



Do not take VIAGRA film-coated tablets together with VIAGRA orodispersible tablets.



You should take VIAGRA about an hour before you plan to have sex.

Swallow the tablet whole with a glass of water.



If you notice that the action of VIAGRA is too strong or too weak, tell your doctor or

pharmacist.



VIAGRA will only help you get an erection if you are sexually stimulated. The time it takes for VIAGRA to work varies from person to person, usually between half an hour and an hour. The effect of VIAGRA may be delayed if you take it with a large meal.



If VIAGRA does not help you get an erection or if the erection does not last long enough to complete sexual intercourse, see your doctor.



If you take more VIAGRA than you should

You may experience an increase in side effects and their severity. Doses greater than 100 mg do not increase efficacy.



You should not take more tablets than recommended by your doctor.



Contact your doctor if you have taken more tablets than recommended.



If you have any further questions on the use of this medicine, ask your doctor, pharmacist or nurse.
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