Malegra 100 pill is commonly used to treat sexual problems in men. The ingredient in this drug is Sildenafil Citrate, which works to relax the muscles by increasing blood flow to the arteries of the penis. This drug should only be taken by men over 18 years of age. This medicine can be taken before or after a meal. The effect of this drug is seen in about 30 minutes. You can use this medicine 1 hour before intercourse to improve your erection.