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Viagra was originally developed by Pfizer but is now off patent and available as a generic. Female Viagra is intended to provide long lasting pleasure during sexual intercourse by combating disorders that inhibit arousal and sexual function in women. Based on published literature, the annual incidence of NAION is 2. As you get older, Viagra leaves your body more slowly.

For more specific information, consult with your doctor or pharmacist for guidance based on your health status and current medications, particularly before taking any action. As a result, a higher amount of a drug stays in your body for a longer time. Your doctor will also check you to determine if this drug is working. You can buy VIAGRA connect from your local pharmacy or online. A: Viagra (sildenafil) works by inhibiting the chemical phosphodiesterase, which leads to an increase in the effect of nitric oxide.

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They can also include erections that last longer than normal. Viagra’s effects typically last for between four and six hours, and it should not be taken unless you intend to have sex.

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It appears unlikely that this drug will harm a pregnancy. Not all possible interactions are listed in this medication guide. Revised: Sep 2015 Side Effects SIDE EFFECTS The following are discussed in more detail in other sections of the labeling: Cardiovascular [see WARNINGS AND PRECAUTIONS] Prolonged Erection and Priapism [see WARNINGS AND PRECAUTIONS] Effects on the Eye [see WARNINGS AND PRECAUTIONS] Hearing Loss [see WARNINGS AND PRECAUTIONS] Hypotension when Co-administered with Alpha-blockers or Anti-hypertensives [see WARNINGS AND PRECAUTIONS] Adverse Reactions with the Concomitant Use of Ritonavir [see WARNINGS AND PRECAUTIONS] Combination with other PDE5 Inhibitors or Other Erectile Dysfunction Therapies [see WARNINGS AND PRECAUTIONS] Effects on Bleeding [see WARNINGS AND PRECAUTIONS] Counseling Patients About Sexually Transmitted Diseases [see WARNINGS AND PRECAUTIONS] The most common adverse reactions reported in clinical trials ( > 2%) are headache, flushing, dyspepsia, abnormal vision, nasal congestion, back pain, myalgia, nausea, dizziness, and rash.

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REVATIO is used to treat a rare disease called pulmonary arterial hypertension (PAH). Awan GM, Calderon E, Dawood G, Alpert MA "Acute, symptomatic atrial fibrillation after sildenafil citrate therapy in a patient with hypertrophic obstructive cardiomyopathy." Am J Med Sci 320 (2000): 69-71 23. Taking Viagra with a nitrate medicine can cause a serious decrease in blood pressure, leading to fainting, stroke, or heart attack. The study started in 2015 and involved 11 hospitals. A: Viagra (sildenafil), is a for erectile dysfunction and for pulmonary arterial hypertension, and may be split, but the shape of the table is not easy to cut. Your body is reacting unfavorably and that can endanger your overall health.How well Viagra works, or how long it lasts for, depends on a number of things. Bortolotti M, Mari C, Lopilato C, Porrazzo G, Miglioli M "Effects of sildenafil on esophageal motility of patients with idiopathic achalasia." Gastroenterology 118 (2000): 253-7 32. Viagra is used in order to treat erectile dysfunction, and generic Viagra pills can be purchased online for as little as $1 each. If you have an erection that lasts more than 4 hours, get medical help right away. You may have a good reason to think twice about using Viagra. It is eliminated predominantly by hepatic metabolism (mainly CYP3A4) and is converted to an active metabolite with properties similar to the parent, sildenafil. However, for some men with ED, they heard only that this pill could be taken to reverse their barrier to having a great sex life. Maximum observed plasma concentrations are reached within 30 to 120 minutes (median 60 minutes) of oral dosing in the fasted state. Nitric oxide then activates the enzyme, guanylate cyclase, which causes the production of cyclic guanosine monophosphate (cGMP). The inhibition of PDE5 in some of these tissues by sildenafil may be the basis for the enhanced platelet antiaggregatory activity of NO observed in vitro, an inhibition of platelet thrombus formation in vivo and peripheral arterial-venous dilatation in vivo. A sudden drop in blood pressure can cause you to feel dizzy, faint, or have a heart attack or stroke.