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Effects on Exercise Stress TestingCialis 5 mg for Once Daily Use for Benign Prostatic Hyperplasia (BPH) why is levitra so expensive 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.During 3 to 6 months of double-blind treatment or longer-term (1 year), open-label studies, few patients withdrew from active treatment for any reason, including lack of effectiveness. At the end of the long-term study, 88% of patients reported that Viagra improved their erections.

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Yet another reason for the drugs not to work as intended is the consumption of a high-fat meal before or along with taking the drug. The fat in such a meal can decrease absorption of the medicine from the gastrointestinal tract. fluoxetine (Prozac, Sarafem)

Reduced blood flow to the penis. This is, by far, the most common cause of ED in men over the age of 40. Like in other parts of the body, the arteries which take blood to the penis can become narrowed. The blood flow may then not be enough to cause an erection. Risk factors can increase your chance of narrowing of the arteries. These include getting older; high blood pressure; high cholesterol; smoking. how do i get viagra Always let you doctor know about all other drugs you are taking - whether they're prescription, non-prescription or "recreational" - including herbal remedies and nutritional or dietary supplements, as they might interact with Viagra.Placebo-subtracted mean maximum decrease in systolic blood pressure (mm Hg)(N=94) Tadalafil 2.5 mg

Hepatic impairment (pulmonary arterial hypertension)Healthy elderly volunteers (65 years or over) had a reduced clearance of sildenafil resulting in approximately 84% and 107% higher plasma AUC values of sildenafil and its active N-desmethyl metabolite, respectively, compared to those seen in healthy young volunteers (18–45 years) [see Clinical Pharmacology (12.3)]. Due to age-differences in plasma protein binding, the corresponding increase in the AUC of free (unbound) sildenafil and its active N-desmethyl metabolite were 45% and 57%, respectively [see Clinical Pharmacology (12.3)].