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There are no adequate and well-controlled studies of sildenafil in pregnant women. The longer cGMP persists, the more prolonged the engorgement of the penis.Take the Impotence (ED) Quiz Impotence (ED) Slideshow Pictures Unzip Your Sex Life Drug Description Find Lowest Prices on VIAGRA® (sildenafil citrate) Tablets DESCRIPTION VIAGRA (sildenafil citrate), an oral therapy for erectile dysfunction, is the citrate salt of sildenafil, a selective inhibitor of cyclic guanosine monophosphate (cGMP)-specific phosphodiesterase type 5 (PDE5). Do not take VIAGRA if you: take medicines called nitrates (such as nitroglycerin) use street drugs called “poppers” such as amyl nitrate or amyl nitrite, and butyl nitrate take any medicines called guanylate cyclase stimulators such as riociguat (Adempas) are allergic to sildenafil, as contained in VIAGRA and REVATIO, or any of the ingredients in VIAGRA. Cialis differs from both Viagra and Levitra with regard to onset and duration of action.

Gharbia, PharmD Q: What's the problem with taking Viagra occasionally two times in the same day, maybe 12 or so hours apart? Alcohol In a drug-drug interaction study sildenafil 50 mg given with alcohol 0. With treatment with Cialis, improvement in erectile function is possible for anywhere from 24 to 36 hours after administration of a dose, significantly longer than with Viagra. Clinical Studies In clinical studies, VIAGRA was assessed for its effect on the ability of men with erectile dysfunction (ED) to engage in sexual activity and in many cases specifically on the ability to achieve and maintain an erection sufficient for satisfactory sexual activity. A: Viagra (sildenafil) is a medication that is used in the treatment of erectile dysfunction. The cause is usually related to a decrease in the blood supply to the penis as well as to injury to the nerves that are responsible for the erection mechanism.

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VIAGRA should not be used with REVATIO or with other PAH treatments containing sildenafil or any other PDE5 inhibitors (such as Adcirca [tadalafil]). We elected to incorporate Viagra into vaginal suppositories in an attempt to improve local uterine absorption and minimize the incidence of systemic side effects . Taking sildenafil with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke, or heart attack. The second concern is that Viagra opens up arteries in the brain lining and can cause excess pressure causing a headache or even a heart attack. Sometimes, nitrates are also given on a daily basis, once or twice a day.

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The best option is treat erectile dysfunction non-pharmacologically. There are possible side effects with Viagra and it is not a bad idea to think twice about taking it. Also talk with your doctor if you have a low or high resting blood pressure, or a history of heart failure or coronary artery disease.

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In those women who continued their dose of antidepressants, their depression didn't worsen during the study, regardless of their group assignment. Avoid the use of grapefruit products while taking Viagra. Being a PDE 5 inhibitor, Viagra Connect works by relaxing the blood vessels around the body including the penis. Israilov S, Baniel J, Shmueli J, et al. "Treatment program for erectile dysfunction in patients with cardiovascular diseases." Am J Cardiol 93 (2004): 689-93 6. This can cause your body to process drugs more slowly. Patients should always ask their doctors for medical advice about adverse events.