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Viagra is a brand name for Sildenafil Citrate, which is effectively used for the treatment of erectile dysfunction in men and also pulmonary arterial hypertension. Vigora 100 mg was initially being developed by the researchers in the United Kingdom, but later it was brought into the market by the pharmaceutical company, Pfizer in the United States.

Since its launch, this drug became the most widely used and effective medication for the treatment of ED. It is also sold under the brand name Revatio for treating pulmonary arterial hypertension. Vigora 100 Online USA is being recommended for improving the ability of patients to exercise and for slowing down the worsening condition of people who are suffering from this ailment.

In the majority of cases, just a single tablet is enough for improving the blood circulation in the penis and producing a healthy and fully sustained erection for long. According to a recent research study, it has been found that 2 out of 3 men who experienced difficulty in erections when took PDE-5 inhibitor like Viagra improves their condition dramatically. Vigora 100mg starts showing its effect within just 30 minutes of taking it.