Fildena 25 is a prescription drug used to treat impotence, erectile dysfunction, and premature ejaculation in men. It is a strong dose that stimulates blood flow to the penis. Males can achieve and maintain an erection when taking of Fildena 25 mg. Sildenafil, one of the ingredients in this drug, aids in a man’s ability to sustain an erection longer. It takes four to six hours for this drug to start working. Adhere to your doctor’s prescription for Fildena 25. Steer clear of alcohol and greasy meals when using this medication.