Notes

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 비아그라 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.
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