Silagra tablets are one of the pills when male sufferers are suffering from a problem like impotence, then Sildenafil drug is used as a solution. Silagra drug is mainly taken 1 hour before intercourse, after which the effect lasts for 4-5 hours. Silagra is also found in different strengths. Silagra tablets are also known as the magic pill and the purple pill. Consult a doctor before taking Silagra tablets.