When a man has a problem during sex, he is used to the problem of erection or the problem of ED. Fildena 100mg drugs are taken 1 hour before intercourse. The effect lasts for 4-5 hours. Philadelphia 100 is known as the magic pill for solving the problem of impotence, as this drug works like magic quickly, and Fildena 100 Mg is also known as the Purple Pill. Fildena 100 mg is ED's most popular drug.