Eating a bad stomach usually means developing acute enteritis, which usually takes about 3 to 7 days to recover, but the recovery time is also affected by the severity of the illness and other factors. Acute enteritis may be caused by a viral infection or a bacterial infection. If the symptoms are mild, most patients can recover in 3 to 4 days; however, if the symptoms are severe, it may take about 7 days to recover. The exact time varies from person to person. Patients with acute enteritis should first be fasted but hydrated. Choose appropriate antibiotics through drug sensitivity tests, such as cefaclor and amoxicillin. It can also be combined with montelukast to relieve the symptoms of diarrhea, combined with bifidobacteria live bacterial capsules, etc. for adjuvant treatment. For those whose abdominal pain is severe enough to cause cramps, antispasmodic agents, such as atropine, can be used in moderation. The above medicines are for reference only, the specific dosage and usage should follow the doctor’s instructions. When eating bad stomach, it is recommended to consult a doctor in time, follow the doctor’s instructions for further examination, under the doctor’s comprehensive analysis, choose a reasonable treatment plan.