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Do not use VIAGRA for a condition for which it was not prescribed. In healthy male volunteers, there was no evidence of a clinically significant effect of azithromycin (500 mg daily for 3 days) on the systemic exposure of sildenafil or its major circulating metabolite. How much of this drug is needed to cause this side effect. Viagra begins to exert its therapeutic effect within one hour with the duration of effects lasting for up to four hours.

You can ask your healthcare provider or pharmacist for information about VIAGRA that is written for health professionals. 5 mmHg when sildenafil was co-administered with alcohol versus -17. Mutagenesis Sildenafil was negative in in vitro bacterial and Chinese hamster ovary cell assays to detect mutagenicity, and in vitro human lymphocytes and in vivo mouse micronucleus assays to detect clastogenicity. Read More Viagra is a very effective medication but it does not work for all conditions and for some men, it can have side effects including heart attack from low blood pressure. Zusman RM, Morales A, Glasser DB, Osterloh IH "Overall cardiovascular profile of sildenafil citrate." Am J Cardiol 83 (1999): c35-44 22.

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The safety of VIAGRA is unknown in patients with bleeding disorders and patients with active peptic ulceration. The incidents include abnormal heart rhythm (atrial fibrillation and ventricular arrhythmia), low blood pressure, myocardial infarction, and blood clots (thromboembolism). Rarely reported side effects include: an erection that will not go away (priapism). A: Brand-name prescription drugs are protected under patent. With ED, you’re unable to get or maintain an erection.

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It's also about power and dominance, virility despite aging. It’s linked with the development of female sexual characteristics and reproduction. Concomitant administration of VIAGRA and an alpha-blocker may lead to symptomatic hypotension in some patients. Most pharmaceutical companies then charge a lot of money for the drugs to make up for these costs.

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Do not take a medication that claims to be a generic Viagra from the United States without consulting a physician. The rare side effects can include loss of vision/blindness, and a prolonged erection (greater than 4 hours). I started out with 50 mg of Viagra, after about two years I moved up to 100 mg. I am a 44 year old woman who is physically fit (gym 5 days a week) and eats pretty well. While there were no severe adverse events potentially related to blood pressure reported in this study, one subject reported moderate vasodilatation after both VIAGRA 50 mg and 100 mg. Effects of VIAGRA on Cardiac Parameters Single oral doses of sildenafil up to 100 mg produced no clinically relevant changes in the ECGs of normal male volunteers. Do you have any other physical conditions that may be causing it, such as other vascular problems, issues with nerves that send the arousal signal from the brain and spinal cord to the penis (common in diabetes), problems with the structure of the penis or the surrounding tissue, low testosterone, or use of tobacco, alcohol, or illegal drugs? It's important to note that a medical professional will still need to review certain medical details before purchase to ensure it isn't dangerous to your health. In volunteers with severe (CLcr < 30 mL/min) renal impairment, sildenafil clearance was reduced, resulting in approximately doubling of AUC and Cmax compared to age-matched volunteers with no renal impairment [see DOSAGE AND ADMINISTRATION, and Use In Specific Populations].