This is mainly because the composition of Daying-35 is a combination of estrogen and progestin, which may cause uncomfortable symptoms in the gastrointestinal tract after taking it, such as nausea, loss of appetite or stomach pain, but this pain is often mild and does not cause severe abdominal pain, which is caused by the side effects of the drug, and is best taken after meals, which The symptoms of stomach pain may be relieved. If the abdominal pain does not improve after adjusting the medication time, but gradually worsens, it is often not related to the use of Da-Ying-35, but has other gastrointestinal diseases or abdominal pain caused by other diseases, it is recommended to promptly go to the hospital for examination.