Malegra, which contains sildenafil citrate, is used to treat erectile dysfunction (ED) rather than cause it. Malegra is designed to help achieve and maintain an erection by increasing blood flow to the penis when sexually stimulated. It is not known to cause erectile dysfunction directly. While Malegra itself doesn't cause ED, some side effects—like headaches, flushing, and vision changes—can affect sexual performance indirectly by causing discomfort or anxiety.