Like other prescription medicines, Viagra and its generic form, sildenafil, work best when you take them under the right ...

How long does Viagra last? Viagra's effectiveness typically extends up to four hours, with its peak impact occurring within the first two hours. Viagra continues to be active beyond two hours ...

A herbal alternative to Viagra has been found to spice up the ... Until now, evidence of its effectiveness has been largely anecdotal. But the results of the American study show it has a ...