The main side effects of risedronate sodium tablets are as follows: First, some patients taking this drug may experience damage to the digestive tract, manifesting as dysphagia, esophagitis, gastric ulcer and possibly diarrhea, nausea, abdominal pain and constipation. Therefore, it is not suitable to take this drug at the same time with the application of non-steroidal anti-inflammatory drugs, because non-steroidal anti-inflammatory drugs also have a certain damage to the digestive tract. The second point is that some patients taking this drug, especially those who are prone to allergies, may easily develop rashes and itchy skin. The third point is that there may also be manifestations of flu-like syndrome, such as headache, dizziness, joint pain, etc.