Sildenafil citrate is found as an active ingredient in malegra tablets. Used to treat men suffering from erectile dysfunction. The effect of this medicine lasts for 4 to 6 hours. And if the effect of this medicine lasts for more than 6 hours, seek the help of a doctor immediately. This medicine can be taken with or without food. If you want to take this medicine with meals, do not take this medicine with heavy meals. Because it reduces the effect of the drug.