Sibutramine is an appetite suppressant used to aid in weight loss by helping individuals reduce caloric intake. It works by increasing serotonin, norepinephrine, and dopamine levels in the brain, which help control hunger and improve satiety. Although it can be effective for weight management, Sibutramine is associated with potential cardiovascular side effects and is not recommended for individuals with heart conditions. It is typically used under medical supervision and is ideal for those looking for support in a comprehensive weight-loss program.