Malegra is a sexual stimulant that is used to increase libido. It helps men have an erection. It works by enhancing blood flow to the penis, and men who take it can experience longer stronger erections. However, it is important to take this medication only when the man is sexually aroused. It is important to take the medicine as prescribed by your doctor. To avoid any negative side effects of the medication, it is best to take it a few hours before intercourse.