Fildena 100 is a medication that helps to treat erectile dysfunction in men. The fildena 100 belongs to a group of medicines called pde5 inhibitors. It is used when men cannot achieve or maintain an erection sufficient for sexual intercourse because of reduced blood flow to the penis. Fildena relaxes the smooth muscles in the penis and increases blood flow, thereby helping to achieve and maintain an erection. Fildena can be taken as needed, about 1 hour before sexual activity, or as a daily medication by mouth. Fildena is a drug used to treat erectile dysfunction. It is available in the form of tablets containing 100mg of sildenafil citrate.