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Sildenafil Citrate (Viagra) is a one of the originally developed in the year 1991 as a treatment for orchest pain. The drug is now available, in the marketed under the name of the Viagra, received by a FDA approval as a treatment for an erectile dysfunction in the March 1998, and since now that time it has been prescribed for more than 20 million of the men worldwide. It was the first invented oral medication which is directly approved by ED treatment and selling by a Buy Viagra Online. Viagra is as a vasodilator, a drug that has the directly effect of a dilating the blood vessels. It works by the improving of the proper blood circulation to the penis, and by enhancing the effects of the nitric oxide, the agent that relaxes the smooth muscle of the penis and regulates blood vessels during sexual stimulation, allowing the penis to become engorged and achieve an erection.

It comes in the doses of a 25 mg. 50 mg. and 100 mg to. The medication is also taken as an approximately one hour before sexual activity is planned, and may remain effective for up to four hours. One drawback is that to be effective more, it should be taken on an empty stomach. Also, high-fat foods can interfere with the absorption of Viagra. Viagra does not increase a sexual desire. But the Sexual stimulation and arousal are required for it to be more effective.

Many insurance plans cover the cost of Viagra, provided it is prescribed to treat erectile dysfunction. The pills cost approximately $10 each, and the insurers may limit coverage to a specific number of pills for the each month.

Before using Viagra or any drug, you need to notify your doctor of any allergies (especially drug allergies), any penis conditions such as fibrosis/scarring, history of painful/prolonged erection (priapism), sickle cell anemia, blood system cancers (such as leukemia or myeloma), or Peyronie’s disease, eye problems (retina diseases), kidney or liver disease, bleeding disorders or active stomach ulcers, heart diseases, stroke or severe high or low blood pressure.