Don't take diet pills, it's very harmful. If you want to lose weight, you should exercise less and eat less, and strengthen aerobic exercise. Control the diet, eat more vegetables, fruits and coarse grains, and maintain a proper intake of protein nutrients such as meat, eggs and milk. Aerobic exercise: jogging, brisk walking, cycling, swimming, and playing ball for more than 40 minutes at a time. Or walk fast every day, 8 kilometers is ok.