Lower dose or reduced dosing frequency may be required in elderly because of decreased renal or hepatic clearance cure ED medications and side effects The main component of Viagra is Sildenafil Citrate.
Effectiveness37. Vobig MA, Klotz T, Staak M, BartzSchmidt KU, Engelmann U, Walter P "Retinal side-effects of sildenafil." Lancet 353 (1999): 375
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Viagra (silfenfafil) (http://everydayhealth/drugs/viagra) is a phosphodiesterase type 5 inhibitor (PDE5). Viagra relaxes muscles and increases the blood flow to particular areas of the body. Viagra is indicated to treat erectile dysfunction in men. (http://everydayhealth/erectile-dysfunction/erectile-dysfunction-basics.aspx) Generic companies are not allowed to manufacturer versions of a brand name medication until the patent expires on the original product patent. The patent on Viagra is supposed to expire in March 2012 in the United States according to the United States Patent and Trademark Office. The generic company, TEVA pharmaceuticals, has already submitted an application to manufacturer a generic Viagra that has already received tentative approval by the FDA. Do not take a medication that claims to be a generic Viagra from the United States until talking to a physician. When your doctor prescribes a new medication, be sure to discuss all your prescription medications and over-the-counter drugs, including dietary supplements, vitamins, botanicals, minerals and herbals, as well as foods you eat. Always keep a current list of the drugs and supplements you take and review it with your healthcare providers and your pharmacist. If possible, use one pharmacy for all your prescriptions and over-the-counter products. This allows your pharmacist to keep a complete record of all your prescription drugs and advise you about drug interactions and side effects. 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. AlcoholPrev page:cialis without prescription