Filagra drug is taken to treat sexual problems. This medicine helps men to maintain sexual erection for a long time. The drug Filagra contains Sildenafil as an active ingredient. This medicine makes the sex life of men happy. Filagra is the best medicine for erectile dysfunction problem. This medicine is taken 30 minutes or 1 hour before sexual intercourse. The effect of Filagra medicine is observed for 4 to 5 hours. It is advised to take this medicine with 1 glass of water.