Fildena 120 (male impotence tablets) Fildena 120 mg tablets, manufactured by Fortune Healthcare, are used to treat erectile dysfunction or impotence in impotent people. Also, the drug is sometimes used to treat pulmonary arterial hypertension. The drug should not be given to women and children under 18 years of age. Sildenafil citrate tablets take about 30 minutes to demonstrate their mechanism of action with success lasting up to 6 hours. Some impotent men will be allergic to the main active ingredient of the drug and should be examined for allergies.