Several causes of impotence can be cured. These include impotence caused by psychological problems, hormonal disorders and traumatic injury to the penile arteries. Vidalista 5 medicine contains Tadalafil as the main ingredient which is used for the treatment of erectile dysfunction in men. It increases the blood flow in the penis which helps to have an erection while having sex. The time you take it can vary between 30 to 60 minutes before you need to have an erection. After taking the drug, you must engage in foreplay to get an erection or have mental stimulation.