Sildenafil acts as the active ingredient in the drug Fildena 100, Fildena 100mg is taken 1 hour before sex. The effect lasts for 5-6 hours after taking it. It is important to consult a doctor before taking Fildena 100. Fildena 100 should be kept away from small children and pets. Fildena 100 is widely used to solve the problem of ED. Fildena 100 Mg is ED's Best Pill. Fildena 100 should be kept away from small children and pets.