Malegra 100 is a very effective medicine for the problem of erectile dysfunction. The main ingredient in this drug is sildenafil. This drug eliminates the problem of impotence. You can take this medicine only once a day. This medicine should be taken 30 minutes before sexual intercourse. This medicine helps in maintaining and sustaining the erection for a long time. The effect of this medicine lasts for at least 3 to 4 hours. You can visit our store primedz for more information.