Sildenafil acts as the active ingredient in the Fildena 50mg drug. Fildena 50 is taken 1 hour before intercourse, after which you can enjoy sex better. After taking Fildena 50, you have sex for 4-5 hours. Fildena 50 is a popular drug. Seek medical advice before taking Fildena 50 Mg. Taking Fildena 50 can help you enjoy sex better. The Fildena 50 Mg is most commonly used by men. Take Fildena 50 only once a day, otherwise side effects will appear.