At present, there are some disadvantages in oral slimming products. The main side effects of taking diet pills frequently are excitement, dizziness, headache, lethargy, dry mouth and rapid heartbeat. Eating and losing weight for a long time will cause gastrointestinal dysfunction, and some diet pills are even harmful to the human body. If you take it for a long time, it will lead to the deterioration of renal function, which will lead to various diseases.