fildena 100 also sometimes is used for treating pulmonary arterial hypertension. The medication is not to be given to female and children under 18 years old. The medicine composed of Sildenafil Citrate takes around 30 minutes from the time of intake to show its action mechanism with effectiveness that shall last up to 6 hours. While the medicine Fildena 100 mg pill enhances sexual activity, it may also lead to some persistent painful erection in some males.