Malegra 50 mg is a medication used to treat erectile dysfunction (ED) in men. It contains the active ingredient sildenafil citrate, which belongs to a class of drugs called phosphodiesterase type 5 (PDE5) inhibitors. PDE5 inhibitors work by relaxing the smooth muscles in the blood vessels of the penis, allowing increased blood flow and facilitating an erection. It is important to note that Malegra 50 mg should be used under the guidance of a healthcare professional and a prescription is usually required to obtain this medication.