The correct name for Isosorbide Mononitrate Extended-Release Tablets is Isosorbide Mononitrate Extended-Release Tablets, and the main side effects are headache, upright hypotension, nausea, vomiting, and allergic skin reactions. The most common side effect of Isosorbide Mononitrate Extended-Release Tablets is headache, which tends to subside with continued use and over time, and the side effects of mild headache and upright hypotension are often seen when the dose is increased or when the drug is used for the first time. In addition, patients may also experience side effects such as nausea, vomiting, skin allergic reactions (e.g., erythema, etc.), flushing, and other side effects, all of which are rare, while using the drug. Isosorbide mononitrate has the effect of dilating peripheral blood vessels and coronary arteries, clinically used in the long-term treatment of coronary heart disease, as well as myocardial infarction after persistent angina and angina pectoris prevention, but also can be used in combination with other drugs for the treatment of chronic congestive heart failure. It should be noted that the use of Isosorbide Mononitrate Extended-Release Tablets is prohibited in patients who are allergic to any component of the drug, patients with acute circulatory failure, patients with severe hypotension, patients with increased intracranial pressure, patients with glaucoma, patients with cardiogenic shock, patients with severe anemia, patients with acute myocardial infarction accompanied by low filling pressures, and women in the first trimester of pregnancy. Patients should follow the doctor’s instructions to use isosorbide mononitrate extended-release tablets, to avoid blindly using their own medication, so as not to affect the condition, or side effects.