Malegra 50mg is a generic version of Viagra used to treat erectile dysfunction in men. It contains sildenafil citrate, which works by relaxing the muscles in the penis and increasing blood flow to cause an erection. Malegra should be taken 30-40 minutes before sexual activity and has a biological half-life of around 6 hours. It comes in various doses and formulations but does not have aphrodisiac properties and requires sexual stimulation to be effective. Common side effects include headaches and vision changes.