Do not take Vizarsin
If you are taking medicines called nitrates, as the combination may cause a potentially dangerous decrease in your blood pressure. Tell your doctor if you are taking any of these medicines which are often given for relief of angina pectoris (or “chest pain”). If you are not certain, ask your doctor or pharmacist.
If you are using any of the drugs known as nitric oxide donors such as amyl nitrite (“poppers”), as the combination may also lead to a potentially dangerous decrease in your blood pressure.
If you are allergic (hypersensitive) to sildenafil or any of the other ingredients of Vizarsin.
If you have a severe heart or liver problem.
If you have recently had a stroke or a heart attack, or if you have low blood pressure.
If you have certain rare inherited eye diseases (such as retinitis pigmentosa).
If you have ever had loss of vision due to non-arteritic anterior ischaemic optic neuropathy (NAION).