The solution to the issue is erectile dysfunction, commonly referred to as sexual impotence. To address sexual dysfunction, men take Filagra. Sildenafil, an ingredient in the aforementioned medicine, helps men's penile tissue relax. You can take this medication with or without food. This drug is only used by men who are between the ages of 18 and 65. The effects of Filagra take four to six days to manifest. Take this medication without regard to cold drinks or heavy meals.