Malegra 50 mg is a medication used to treat erectile dysfunction (ED) in men. It contains sildenafil citrate as its active ingredient, which is a phosphodiesterase type 5 (PDE5) inhibitor. Sildenafil works by increasing blood flow to the penis, facilitating an erection when a man is sexually stimulated. The active ingredient in Malegra 50 mg is sildenafil citrate. This is the same active ingredient found in other well-known ED medications such as Viagra.