Nitrates are medications used to improve blood flow and relieve chest pain caused by reduced blood supply to the heart. They are commonly prescribed for patients with angina and other forms of coronary artery disease.
By relaxing and widening blood vessels, nitrates help the heart receive more oxygen-rich blood while reducing the amount of work the heart must perform. This can help relieve symptoms, improve activity tolerance, and reduce episodes of chest discomfort.
Nitrates relax the smooth muscle within blood vessel walls, causing blood vessels to widen. This allows blood to flow more easily throughout the body and improves the delivery of oxygen to the heart muscle.
At the same time, nitrates reduce the workload on the heart by decreasing the pressure against which it must pump. Together, these effects can help prevent or relieve angina symptoms.
Some nitrates are used for rapid relief of chest pain, while others are taken regularly to help prevent symptoms from occurring.
Nitrates may be recommended if you have:
Your provider will evaluate your symptoms, medical history, and cardiovascular health to determine whether nitrate therapy is appropriate for your condition.
Nitrates are available in several forms, including tablets, sprays, patches, and long-acting medications. Depending on your condition, you may be prescribed a nitrate to use during episodes of chest pain, as a preventive therapy, or both.
Many patients experience fewer episodes of angina and improved ability to participate in daily activities. Common side effects may include headaches, dizziness, or flushing, particularly when starting treatment.
While nitrates can be highly effective at relieving symptoms, they do not remove blockages within the coronary arteries. For some patients, additional treatments such as coronary angioplasty and stenting, coronary artery bypass surgery, or other interventions may be recommended to improve blood flow and address the underlying cause of symptoms.