Nausea and vomiting after eating expired yogurt may be a condition caused by acute gastroenteritis, which can be relieved by taking medications under the direction of a physician, among other things. As the patient consumes expired yogurt, the gastrointestinal tract is inflamed, and abdominal pain, diarrhea and other symptoms may occur. Patients can use gentamicin tablets, levofloxacin and other drugs for treatment. Patients also need bed rest, timely replenishment of lost fluids, and relief of symptoms such as nausea and vomiting. If the patient is accompanied by watery stools or fever, drugs such as amoxicillin capsules can be used for treatment. After taking expired yogurt, patients are recommended to eat a light diet within 24 hours, mainly fluids, avoid eating expired food, and seek medical attention when abnormalities occur. If discomfort occurs, it is recommended to consult a doctor in a timely manner, under the guidance of the doctor to clarify the cause of the disease and targeted treatment, do not take medication on their own, so as not to delay the condition.