Fildena Is the best drug to solve the problem of impotence? Fildena tablets are widely used to treat sex related problems. Fildena A is taken one hour before sex, after which its effect lasts for 5-6 hours, this is used more to solve the problem of ED. Fildena is also found in different powers. Fildena is widely used by men. Fildena is considered to be one of the best and most widely used of the ED.