It is impossible to definitively answer this question without taking into account the individual’s diet, lifestyle, and other factors. Generally speaking, prescription diet pills can help people lose weight when used in conjunction with a healthy diet and exercise program. However, it is important to note that these medications should only be taken under the supervision of a healthcare professional as they may cause serious side effects if not monitored properly. Additionally, results will vary from person to person depending on their overall health and fitness level.