Fildena 100Mg contain the active component tadalafil, which is also available in a 20 mg dose. It reduces stress by relaxing the smooth muscles around the pelvic organs and improving blood flow to the penis. During sexual activity, this results in a stronger and longer-lasting erection. Fildena 150 Centurion, on the other hand, relies entirely on the patient's sexual arousal to function. Before the medicine becomes ineffective, it must last at least 45 minutes.