Malegra DXT and Viagra are both medications used to treat erectile dysfunction (ED), but they differ in their composition and effects. Malegra DXT contains sildenafil, like Viagra, but it also includes dapoxetine, which is a selective serotonin reuptake inhibitor (SSRI) used to treat premature ejaculation. Viagra works by increasing blood flow to the penis, helping men achieve and maintain an erection, and is typically effective within 30 to 60 minutes. Malegra DXT combines the effects of sildenafil for ED and dapoxetine for premature ejaculation, making it effective for men who experience both conditions. While both medications are effective, Malegra DXT is more versatile due to its dual action, while Viagra is specifically focused on treating ED.