Levitra 40 mg is an oral drug used for the treatment of Erectile Dysfunction (ED). It contains the special component Vardenafil that increases the blood flow to the penis. It helps achieve or sustain an erection hard when a person actually sexually stimulated. It is recommended dosage from the doctor take one pill in 24 hours. It should be taken approximately 30 minutes to 1 hour before sexual activity. The effects of this medicine last for around 5 hours after consumption.