Anti-obesity preparations are products that are designed to help people lose weight. These can include medications, supplements, dietary changes, and physical activity. Common medications used for weight loss include orlistat, liraglutide, and bupropion. Dietary changes may involve reducing caloric intake, increasing fiber intake, and limiting the intake of sugary and processed foods. Physical activity is an important part of any weight loss program and includes activities such as walking, running, swimming, and cycling.