Fildena 150 tablet is a well-known brand of sildenafil citrate, a medication used to treat erectile dysfunction in men. Impotence, or erectile dysfunction, is a sexual condition in which a man is unable to achieve or maintain an erection during sexual activity. Fildena 150 mg and Sildalist is a tablet that is taken by mouth. Take the recommended dose with a full glass of water and on an empty stomach if possible. The ability to digest the drug would be improved if the tablet is swallowed without food. You may also take Suhagra 100 or Filagra to treat ED.