Isosorbide Mononitrate is a medication primarily used to prevent chest pain, known as angina, in individuals with heart conditions. It works by relaxing blood vessels, which improves blood flow and reduces the heart's workload. This helps to alleviate symptoms associated with angina attacks. Typically taken in tablet form, Isosorbide Mononitrate is often prescribed for long-term management rather than immediate relief. Common side effects may include headaches, dizziness, and low blood pressure. Patients should follow their healthcare provider's instructions and report any unusual symptoms or concerns during treatment.