Erectile dysfunction is a problem that is found in men during sexual intercourse. Filitra tablets have been used to treat this. Vardenafil is found in the drug as an oral ingredient. If the effect of this medicine lasts for more than 4 or 6 hours, consult a doctor immediately. This is because the effect of this drug lasts for 4 to 6 hours. Take this medicine only once in 24 hours.