Viagra (sildenafil) has been created to help men who experience problem getting an erection to have sex and experience an orgasm without any problems whatsoever. It’s recommended to take Viagra about 45 minutes before having sex. It’s going to be most efficient if you make sexual attempt after about an hour. Viagra is efficient in 85% of all cases, so there is a good chance you will be able to keep your impotence under control. Make sure you always consult your health care provider before starting to take any new medications, such as certain antifungals, medications for high blood pressure, HIV protease inhibitors, certain barbiturates, seizure medications, beta blockers, cimetidine, other medications for erectile dysfunction, nevirapine, alpha blockers, efavirenz, anticoagulants, or erythromycin, as drug interactions are possible. Viagra must never be combined with isosorbide mononitrate, nitrates and isosorbide dinitrate as a dangerous drop in blood pressure is possible. Certain medical conditions can affect the success of your treatment, such as chest pain, heart disease, pulmonary veno-occlusive disease, kidney disease, bleeding disorder, irregular heartbeat, diabetes, blood cell problems, conditions affecting the shape of the penis, blood circulation problems, stomach ulcer, high cholesterol, stroke, liver disease, heart attack, and high or low blood pressure. Make sure you let your doctor know if you have or used to have any of the medical conditions listed, as they can affect the dose you have been prescribed and require additional tests. Mild side effects can be sometimes experienced by people using Viagra regularly, especially at the beginning of your treatment. The following ones are most likely: insomnia, changes in color vision, sensitivity to light, nosebleeds, heartburn, diarrhea, headache, flushing, muscle aches, and burning or tingling in the arms. If the mild side effects mentioned change in intensity or become bothersome, make sure you inform your health care provider about them. More serious side effects are also possible, although unlikely. Make sure you report to your health care provider any of the following serious side effects if you develop them while using Viagra: vision changes, sweating, general ill feeling, sudden vision loss, feeling light-headed, irregular heartbeat, ringing in your ears, nausea, shortness of breath, swelling in your hands, sudden hearing loss, and chest pain.

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