Malegra 100 is a prescription medicine for the Erectile Dysfunction issue. A sildenafil are present in this are secure drug to treat ED condition. Take this drug by taking your pharmacist advice because in some cases, you may experience certain common side-effects such as headache, nausea, dizziness, blurred vision, indigestion and stuffy nose. However, you are advised to talk to your doctor if you experience these side-effects.