Hello, generally speaking, you can't take diet pills during your period. It's time for women to consume energy. At this time, if losing weight is very bad for our health, the absorption during menstruation will be weakened and physical strength will decline, which will not help you lose weight. You can do some soothing exercises during your menstrual period and start to lose weight on the third day after the end. Taking medicine is not recommended, and you can lose weight through exercise.