Malegra 100 medicine is used in men with ED problems. This drug contains an ingredient called sildenafil. As soon as the drug is in effect, as the muscles relax, a constant flow of blood is achieved to keep the penis erect and strong for the desired period. The effect of this drug lasts for 3-4 hours. This medicine should be used only on the advice of a doctor. Visit our official site erectilepharma.com for more information.