Viagra

Viagra (sildenafil) is a prescription drug intended for the treatment of impotence in males. A more accurate term used for the condition Viagra can be used to treat is erectile dysfunction – it gives a more clear idea of what the problem is like. Viagra works by inhibiting a specific enzyme called phosphodiesterase-5 (PDE5) allowing the erection to last for long enough to have sex. Certain amount of stimulation is required for an erection to occur, and then it is likely to go away on its own. Viagra will not cure your erectile dysfunction, nor is it going to make your erections more stable if you are not taking it as needed. It's best to take this medication about an hour before having sex. Viagra comes in blue diamond-shaped tablets containing 25, 50 and 100 mg of the active ingredient to suit the needs of different patients. Once you have taken this medication you can expect the efficiency within the next 30-60 minutes, and you can have sex within the next 3-4 hours. If you are taking medicines for chest pain (nitrates), such as isosorbide dinitrate, isosorbide mononitrate or nitroglycerin, no matter which form they come in, never take Viagra without your doctor's consent, as otherwise serious health effects are possible. If you are taking any medications your health care provider may need to monitor you carefully for side effects to make sure you are benefitting from the treatment. The following drugs need to be reported if you are taking them at the moment: nevirapine, alpha blockers, anticoagulants, barbiturates, beta blockers, erectile dysfunction medicines, antifungals, cimetidine, high blood pressure medications, erythromycin, seizure medications, rifampin, efavirenz, rifabutin, HIV protease inhibitors, and any other herbal products you are taking. If you are not sure how the medicine you are taking at the moment can be classified, ask your health care provider or your pharmacist or use an online pill identifier to make sure there are no interactions possible. Also talk to your doctor about any health conditions you have or used to have, especially bleeding disorder, liver disease, retinitis pigmentosa, stomach ulcer, kidney disease, blood cell disorder, high or low blood pressure, a history of a heart attack, stroke, or heart rhythm disorder, congestive heart failure, and coronary artery disease, as this may affect the dose you are prescribed.