Fildena Professional 100 Mg is a medication that can treat impotence and erectile dysfunction in men. sildenafil, one of the ingredients in this drug, increases blood flow and helps men feel more stimulated during extended sexual activity. Take this one hour before engaging in sexual activity with your partner to make sure you enjoy it. The half-life of this medication is six hours. Cold drinks and fatty foods should be avoided while taking this medication as they will reduce its effectiveness. Take this medication 30 minutes before engaging in any sexual activity. You can take this medication with or without food. Do not chew or crush the tablet; instead, take it with water. Take this medicine as prescribed by your doctor.