Amlodipine is primarily used to treat high blood pressure (hypertension) and certain types of chest pain (angina). By relaxing the blood vessels, it helps to improve blood flow and reduce the workload on the heart. This makes it effective in managing hypertension, lowering the risk of heart attacks, strokes, and kidney problems. In cases of angina, it helps to increase the supply of blood and oxygen to the heart, alleviating chest pain and improving exercise tolerance. It is often prescribed as a long-term medication due to its sustained effects and is commonly used in combination with other drugs for comprehensive cardiovascular management.