Angina is treated with a combination of medications, lifestyle changes, and sometimes procedures to restore blood flow to the heart. Most people with stable angina manage their symptoms effectively with drugs that widen blood vessels or reduce the heart’s workload, along with a fast-acting nitroglycerin tablet or spray for episodes as they happen. The right treatment plan depends on how often your symptoms occur, how severe they are, and how many coronary arteries are narrowed.
Stopping an Episode With Nitroglycerin
Nitroglycerin is the go-to rescue treatment for an angina episode. It widens the coronary arteries quickly, restoring blood flow and relieving chest pain within minutes. It comes as a sublingual tablet, a spray, or a dissolving powder, all placed under the tongue at the first sign of chest tightness or pain.
The dosing is straightforward: take one dose at the first sign of symptoms, then repeat every five minutes if the pain persists. The maximum is three doses in 15 minutes. If your chest pain hasn’t improved after three doses, that’s an emergency and you need immediate medical attention. A useful strategy is to take nitroglycerin before activities you know trigger your symptoms, like climbing stairs or walking in cold weather, which can prevent an episode from starting.
Daily Medications That Prevent Episodes
The 2023 guidelines from the American College of Cardiology and American Heart Association recommend either a beta blocker or a calcium channel blocker as the first daily medication for angina. This is a notable shift: beta blockers were long considered the automatic first choice, but the evidence supporting that prioritization over calcium channel blockers isn’t strong. Both are now considered equal first-line options.
Beta blockers slow the heart rate and reduce how forcefully the heart contracts, which lowers its oxygen demand. Calcium channel blockers relax and widen blood vessels, increasing blood flow to the heart. In clinical trials, calcium channel blockers reduce angina frequency, cut down on nitroglycerin use, and improve exercise tolerance. Your doctor will choose between the two based on your heart rate, blood pressure, and whether you have other conditions like heart failure. One important note: certain calcium channel blockers (verapamil and diltiazem) should not be used if your heart’s pumping ability is significantly reduced.
Long-acting nitrates are another option. Unlike the fast-acting nitroglycerin you use during an episode, these are taken on a daily schedule to prevent angina throughout the day. Adding a long-acting nitrate to a beta blocker or calcium channel blocker improves exercise tolerance and reduces how often breakthrough episodes occur. If one medication alone isn’t controlling your symptoms, combining two agents from different classes generally improves symptom control.
When First-Line Medications Aren’t Enough
For people who still have angina despite taking beta blockers, calcium channel blockers, or long-acting nitrates, ranolazine is an FDA-approved add-on option. It works differently from the other drugs. Rather than changing heart rate or blood pressure, it reduces excess calcium buildup inside heart muscle cells, which lowers the tension in the heart wall and eases symptoms. Two randomized trials showed that adding ranolazine to standard therapy improved angina outcomes.
Side effects are more common with ranolazine than with the first-line drugs. Dizziness, headaches, nausea, and constipation are the most frequently reported. Some people also experience blurred vision, ringing in the ears, or dry mouth.
Aspirin and Cholesterol Control
Beyond symptom relief, treating angina means slowing the underlying disease. Low-dose aspirin (75 to 100 mg daily) helps prevent blood clots from forming on the fatty plaques inside your coronary arteries, reducing the risk of a heart attack.
Statin therapy is standard for anyone with established coronary artery disease. The goal is to bring LDL cholesterol below 100 mg/dL, with a target below 70 mg/dL considered ideal for high-risk patients. The medication should be dosed aggressively enough to achieve at least a 30 to 40 percent reduction in LDL. These targets matter because lowering cholesterol slows plaque growth and can stabilize the plaques that are already there, making them less likely to rupture and cause a heart attack.
Procedures to Restore Blood Flow
When medications don’t adequately control angina, two procedures can physically open or bypass narrowed arteries. Both provide good symptom relief, and data from the ISCHEMIA trial showed that revascularization improves quality of life more than medication alone, with the benefit sustained over at least three years of follow-up. The improvement is most pronounced in people who have frequent angina (daily or weekly episodes).
Angioplasty with stenting (PCI) involves threading a catheter to the blocked artery, inflating a small balloon to open it, and placing a mesh stent to hold it open. It’s less invasive and has a shorter recovery, but repeat procedures are needed more often. In one study of single-vessel disease, 38 percent of angioplasty patients needed another procedure within about six years, compared to 12 percent of bypass patients.
Bypass surgery (CABG) reroutes blood around the blockage using a vessel grafted from your chest wall or leg. It’s preferred when the disease is more extensive: blockages in the left main artery, severe three-vessel disease, or diffuse narrowing across multiple arteries. It’s also the better option for people with diabetes. In the BARI trial, diabetic patients who received bypass surgery with an internal chest artery graft had an 83 percent survival rate at seven years, compared to about 55 percent for those who had angioplasty. For patients with low-risk, single-vessel disease, neither procedure has been shown to reduce mortality compared to the other, so the choice often comes down to symptom control and the likelihood of needing a repeat procedure.
Exercise and Physical Activity
Exercise might seem counterintuitive when physical exertion triggers your symptoms, but structured physical activity is one of the most effective long-term treatments for stable angina. The European Society of Cardiology recommends moderate-to-vigorous aerobic exercise at least three times a week, for 30 minutes per session.
The key is working at the right intensity. In cardiac rehabilitation programs, the target is typically set at 70 to 75 percent of your maximum heart rate during a supervised stress test. This means exercising hard enough to strengthen the heart and improve circulation, but staying below the threshold that triggers ischemia. If you haven’t been tested, start conservatively and build up gradually. Using nitroglycerin before your workout can help you exercise more comfortably.
Diet and Lifestyle Changes
The DASH eating plan, designed to lower blood pressure, is widely recommended for people with coronary artery disease. The most impactful change is sodium: keeping intake below 2,300 mg per day lowers blood pressure, and dropping to 1,500 mg daily produces even greater reductions. In practical terms, that means cooking more at home, reading labels carefully, and cutting back on processed and restaurant food.
Smoking cessation is non-negotiable. Smoking damages the artery lining, promotes plaque buildup, and triggers spasms in the coronary arteries, all of which directly worsen angina. Quitting produces measurable improvements in blood vessel function within weeks. Maintaining a healthy weight and managing blood sugar (if you have diabetes) further reduce the strain on your coronary arteries over time.
Recognizing When Angina Becomes an Emergency
Stable angina follows a predictable pattern: it shows up during exertion or stress and goes away with rest or nitroglycerin. Unstable angina breaks that pattern, and it’s a medical emergency. The warning signs are chest pain that is new, occurs at rest, or is worsening in frequency, duration, or severity. Another red flag is pain that doesn’t fully resolve with nitroglycerin or rest.
Angina can also show up in unexpected ways. Pain, pressure, or tightness in the neck, arms, shoulders, upper abdomen, or back, along with unexplained fatigue and shortness of breath, are all considered angina equivalents. These atypical symptoms are more common in women and people with diabetes. Unstable angina can signal an impending heart attack, so any sudden change in your symptom pattern warrants calling emergency services rather than waiting to see if it passes.