Vardenafil is found in the valif tablet as an oral ingredient. Used to treat erectile dysfunction in men. The effect of this drug lasts for 4 to 6 hours. And if the effect of this medicine lasts for more than 6 hours, seek the help of a doctor immediately. Take this medicine only once a day. Do not use this medicine daily. You can take this medicine on an empty stomach. For more information visit our site imediz.com.