Malegra 100 tablet is commonly used to treat sexual problems in men. The active ingredient in this drug is sildenafil citrate, which stimulates erection by increasing blood flow to the penile arteries and works to relax the muscles. This medicine should only be taken by men above 18 years of age. This medicine can be taken before or after food. The effect of this medicine lasts for about 4 to 5 hours. This medicine should be taken once a day as advised by the doctor. Using this medicine improves your sex life. This medicine can be taken only by men.