Malegra 200 medicine is used by men to treat sexual problems of impotence. This drug is usually taken 30-40 minutes before intercourse. The sildenafil citrate in this drug works to relax the muscles by increasing the amount of blood in the arteries of the penis. This medicine can be taken before or after a meal. The effect of this drug lasts for about 36 hours. Alcohol should not be consumed while taking this medicine.