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It’s also possible for anxiety about intercourse after a prolonged period of abstinence, fear of side effects, or unaddressed psychological issues such as guilt or religious concerns about engaging in sexual intimacy to interfere with the ability to get and maintain an erection. viagra otc inability to move the arms, legs, or facial muscles

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Viagra (sildenafil) works by inhibiting the chemical phosphodiesterase, which leads to an increase in the effect of nitric oxide. Nitric oxide allows the smooth muscles inside the penis to relax, promoting more blood flow to the area during sexual arousal or stimulation. Nitric oxide also opens the blood vessels throughout the body, which can cause decreased blood pressure. This decrease in blood pressure may increase the effects of blood-pressure lowering drugs, especially alpha-blockers, such as terazosin (Hytrin), doxazosin (Cardura), and prazosin (Minipress). Patients with cardiovascular disease could have additional side effects from Viagra, especially in combination with sexual activity. Other common side effects of Viagra include warmth or redness in your face, neck, or chest; stuffy nose; headache; upset stomach; and back pain. More serious, but less frequent side effects include prolonged erection lasting more than 4 hours, vision changes, and loss of hearing. If these occur, you should contact your health care provider. viagra online cheap Storage of Viagra?16. Kloner RA, Zusman RM "Cardiovascular effects of sildenafil citrate and recommendations for its use." Am J Cardiol 84 (1999): n11-7have previously had sudden loss of eyesight in one or both eyes.

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Esta lista no está completa. Otras drogas pueden interactuar con vardenafil, incluyendo medicinas que se obtienen con o sin receta, vitaminas, y productos herbarios. No todas las interacciones posibles aparecen en esta guía del medicamento.

daily use cialis Results in General ED Population in Trials Outside the US — The 5 primary efficacy and safety studies conducted in the general ED population outside the US included 1112 patients, with a mean age of 59 years (range 21 to 82 years). The population was 76% White, 1% Black, 3% Hispanic, and 20% of other ethnicities, and included patients with ED of various severities, etiologies (organic, psychogenic, mixed), and with multiple co-morbid conditions, including diabetes mellitus, hypertension, and other cardiovascular disease. Most (90%) patients reported ED of at least 1-year duration. In these 5 trials, Cialis 5, 10, and 20 mg showed clinically meaningful and statistically significant improvements in all 3 primary efficacy variables (see Tables 12, 13 and 14). The treatment effect of Cialis did not diminish over time.Specific interaction studies with antidiabetic medicinal products were not conducted.

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