(Sildenafil) is an oral drug, a new generation extra-strength prescription medicine, that activates the natural blood flow, followed by hardness and expansion of your sexually excited penis for peak sexual performance, used to treat erectile dysfunction in men.(Sildenafil) is an oral drug, a new generation extra-strength prescription medicine, that activates the natural blood flow, followed by hardness and expansion of your sexually excited penis for peak sexual performance, used to treat erectile dysfunction in men.Learn about the potential of (sildenafil). Includes common and rare information for consumers and healthcare professionals.