What medicines are usually prescribed for coronary artery disease and angina? 

If you have been diagnosed with coronary artery disease (CAD) or angina, you have likely left the pharmacy with a heavy bag of medication. It can be overwhelming to suddenly be taking four or five different pills daily. However, these medicines are not just for symptom relief; they are a sophisticated defence system. Each drug targets a specific part of the disease process, thinning the blood, stabilizing the plaque, slowing the heart, and relaxing the arteries, to prevent a heart attack and keep you active. 

What We’ll Discuss in This Article 

• The ‘Big Four’ categories of heart medication. 

• Antiplatelets (Aspirin/Clopidogrel): Thinning the blood to prevent clots. 

• Statins: Stabilising plaque and lowering cholesterol. 

• Beta-Blockers: Slowing the heart to reduce oxygen demand. 

• Nitrates (GTN): Opening the arteries to relieve pain. 

• ACE Inhibitors: Protecting the blood vessels and lowering pressure. 

• Managing common side effects without stopping treatment. 

The Blood Thinners (Antiplatelets) 

Role: prevent blood clots.  

Common Names: Aspirin, Clopidogrel, Ticagrelor.  

The most immediate danger in heart disease is not the narrowing of the artery, but the sudden formation of a clot if a plaque ruptures. Antiplatelets make your blood cells (platelets) less sticky, so they slide past each other rather than clumping together.  

• Aspirin: Usually a low dose (75mg) taken for life. 

• Dual Therapy: After a stent or heart attack, you may take two types (e.g., Aspirin + Clopidogrel) for a year to offer double protection. 

• Side Effects: Increased risk of bleeding (nosebleeds, bruising) and indigestion.  

The Plaque Stabilisers (Statins) 

Role: Lower cholesterol and harden plaque. 

Common Names: Atorvastatin, Simvastatin, Rosuvastatin.  

Statins do more than just lower ‘bad’ cholesterol numbers. They actively reduce inflammation inside the artery wall and ‘harden’ soft plaque, making it less likely to burst. According to the NHS, statins significantly reduce the risk of heart attacks and strokes in people with heart disease. 

• Target: Doctors usually aim for a high dose (e.g., Atorvastatin 80mg) for heart patients, regardless of their starting cholesterol level. 

• Side Effects: Muscle aches are the most common complaint, though serious damage is rare. 

The Heart Slower (Beta-Blockers) 

Role: Reduce heart rate and blood pressure.  

Common Names: Bisoprolol, Atenolol, Metoprolol. 

These drugs block the effects of adrenaline. By slowing your heart rate and reducing the force of each beat, they drastically lower the heart’s demand for oxygen. If the heart needs less fuel, you are less likely to get angina pain during exercise. 

• Mechanism: They act like a ‘speed limiter’ for your car engine. 

• Side Effects: Fatigue, cold hands and feet, and sometimes erectile dysfunction. 

The Pain Relievers (Nitrates) 

Role: Widen (dilate) the arteries.  

Common Names: Glyceryl Trinitrate (GTN Spray), Isosorbide Mononitrate. 

Nitrates work by relaxing the muscles in the blood vessel walls, opening them up to allow more blood flow. 

• Short-Acting (GTN Spray): Used for immediate relief during an attack. 

• Long-Acting (Tablets): Taken daily to keep arteries open and prevent attacks from happening. 

• Side Effects: Headaches (very common) and flushing. 

The Vessel Protectors (ACE Inhibitors) 

Role: Lower blood pressure and prevent heart remodeling.  

Common Names: Ramipril, Lisinopril, Perindopril.  

These prevent the body from producing a chemical (Angiotensin II) that tightens blood vessels. By keeping vessels relaxed, they lower blood pressure and protect the heart muscle from weakening over time.  

• Why: They are vital if you also have diabetes, high blood pressure, or weak heart muscle (heart failure). 

• Side Effects: A persistent dry cough is a well-known side effect. If this happens, your doctor can switch you to a similar drug called an ARB (e.g., Candesartan). 

Calcium Channel Blockers (The Alternative) 

Role: Relax arteries and slow heart rate. 

Common Names: Amlodipine, Diltiazem, Verapamil. 

If you cannot take beta-blockers (e.g., due to asthma), doctors often prescribe these. They are excellent at preventing artery spasms and lowering blood pressure. 

Conclusion 

Managing coronary artery disease is a team effort between you and your medication. While taking multiple pills is a nuisance, this ‘cocktail’ has been proven to extend life and prevent heart attacks. Never stop a medication abruptly because of side effects, there is almost always an alternative drug within the same family that will suit you better. Talk to your GP to find the balance that protects your heart without compromising your quality of life. 

If you notice black, tarry stools or vomit that looks like coffee grounds, stop your aspirin/clopidogrel and seek urgent medical help, as this indicates internal bleeding. 

Authority Snapshot 

This article was written by Dr. Rebecca Fernandez, a UK-trained physician (MBBS) with extensive experience in cardiology and chronic disease management. Having prescribed and monitored these medications for thousands of patients, Dr. Fernandez explains the ‘cocktail’ of pills used to protect the heart. This content has been reviewed to ensure strict alignment with NHS and NICE safety guidelines, helping you understand why you are taking each tablet.