Precautions Before you start taking Sildenafil Citrate , tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. Aged people may be more sensitive to the side effects of the drug. Contraindications is contraindicated in patients taking another medicine to treat impotence or using a nitrate drug for chest pain or heart problems. This medicine should not be taken by women and children as well as in patients with a known hypersensitivity to any component of the tablet. In case you notice any side effects not listed above, contact your doctor or pharmacist. free trial voucher after using does effect fertility the alternative download for us cialis levitra test online cheap ci vuole ricetta medica Drug interaction This drug should not be used with nitrates and recreational drugs called "poppers" containing amyl or butyl nitrite; alpha-blocker medications; other medications for impotence; high blood pressure medicines, etc. Consult your doctor or pharmacist for more details.