1, malnutrition: long-term use of slimming needles can easily lead to malnutrition, nausea, vomiting and other symptoms. In this case, the yellow water spit out is due to the gastric acid in the stomach stimulating the esophageal mucosa, leading to mucosal edema and congestion. Eat more fruits and vegetables rich in vitamins, drink plenty of water, seek medical advice in time, stop taking medicine or replace other diet pills under the guidance of a doctor.

2. Drug allergy: allergic reaction to the ingredients in the slimming needle may lead to gastrointestinal symptoms such as nausea, vomiting and diarrhea. In severe cases, it may cause yellow water vomiting. At this time, you need to see a doctor in time, stop taking medicine under the guidance of a doctor, take anti-allergic drugs such as loratadine tablets and diphenhydramine hydrochloride tablets, and drink plenty of water to promote metabolism.