The side effects of ginger are as follows: 1, it can cause a violent reaction in the gastrointestinal tract, like heartburn, nausea, vomiting, bloating, diarrhea and a series of related symptoms, especially for patients with gastric ulcer has a huge impact. 2, the application of ginger in excessive doses can easily lead to discomfort and even vomiting in pregnant women, which may easily induce miscarriage. 3, the application of ginger for blood sugar The application of ginger may lead to abnormal blood clotting, especially for patients with bleeding, and must be vigilant.