Atorvastatin: NHS prescribing, monitoring and NICE guidance

NICE Clinical Guideline CG181 guides statin prescribing in England and Wales. Atorvastatin is key in these recommendations.

Primary prevention (people without existing heart disease):

• Adults with a 10-year QRISK3 score of 10% or more are offered atorvastatin 20 mg.
• The QRISK3 calculator uses age, sex, ethnicity, blood pressure, cholesterol, smoking status, diabetes, family history, and kidney disease.
• Discuss benefits and risks with the patient before starting treatment.
• Lifestyle changes, like diet, exercise, and stopping smoking, should always be part of the plan.

Secondary prevention (people with existing heart disease):

• All adults with established cardiovascular disease are offered atorvastatin 80 mg. This includes those with a previous heart attack, stroke, TIA, or peripheral arterial disease.
• Use a lower dose if 80 mg is not tolerated. Also, use a lower dose if there is a potential drug interaction.
• Treatment should continue indefinitely unless there is a clear reason to stop.

Familial hypercholesterolaemia:

• High-intensity statin therapy is recommended for all adults with confirmed familial hypercholesterolaemia.
• NICE guideline CG71 gives specific advice for this condition.

I always explain the QRISK3 score to patients. I show them how treatment reduces their absolute risk. This shared decision-making helps patients stick to treatment and understand it better.

Atorvastatin is a prescription-only medicine. You cannot buy it over the counter in the UK. Here is how the process usually works in NHS primary care.

The assessment:

1. Your GP or practice nurse will do a cardiovascular risk assessment. This includes blood tests for lipid profile, HbA1c, liver function, kidney function, and thyroid function.
2. Your QRISK3 score is calculated using these results and your medical history.
3. If your score is 10% or higher, or you have existing heart disease, statin therapy is discussed.

Starting treatment:

• Atorvastatin 20 mg is for primary prevention. Atorvastatin 80 mg is for secondary prevention.
• You can take it at any time of day. Simvastatin, for example, must be taken at night.
• Your first follow-up blood test is at 3 months. This checks your response and liver function.

Ongoing prescribing:

• Once treatment is stable, atorvastatin is given as a repeat prescription.
• An annual review with blood tests is standard.
• Most GP practices use electronic repeat dispensing. This means you collect your medicine monthly from your pharmacy.

Cost:

Generic atorvastatin is very cost-effective for the NHS. The drug costs the NHS only pence per day. Patients in England pay the standard prescription charge per item.

Prescriptions are free in Scotland, Wales, and Northern Ireland.

NHS Health Check:

Adults aged 40 to 74 can get a free NHS Health Check every 5 years. This check includes a cardiovascular risk assessment. Statin therapy is often first discussed at this point.

NICE CG181 sets out a clear monitoring schedule for atorvastatin patients. I follow this closely in my practice. I also make sure patients understand why each test is done.

Before starting treatment:

• A full lipid profile, including total cholesterol, HDL, non-HDL, and triglycerides.
• Liver function tests, including ALT and AST.
• HbA1c or fasting glucose.
• Kidney function, including eGFR and creatinine.
• Thyroid function, to rule out hypothyroidism as a cause of high cholesterol.

At 3 months:

• Repeat lipid profile. NICE aims for a greater than 40% reduction in non-HDL cholesterol from the start.
• Liver function tests. If ALT/AST are more than 3 times the upper limit, stop atorvastatin and investigate.
• Review how well the patient is taking the medicine and any side effects.

At 12 months:

• Repeat lipid profile and liver function tests.
• HbA1c to check for new-onset diabetes.
• Kidney function.

Annually thereafter:

• Lipid profile.
• HbA1c.
• Kidney function.
• Liver function tests are not usually needed unless there is a clinical reason.
• Review cardiovascular risk factors and how well the patient is taking their medicine.

Additional tests if symptomatic:

• CK (creatine kinase): Only if the patient reports muscle symptoms. Routine CK monitoring is not advised.
• Vitamin D: Consider checking in patients with muscle symptoms. A deficiency can seem like statin muscle pain.

NICE stresses that atorvastatin should always be part of a full plan. This plan aims to reduce cardiovascular risk. Medicine alone is not enough.

Diet:

• Eat a Mediterranean-style diet. This means lots of fruits, vegetables, whole grains, oily fish, nuts, and olive oil.
• Cut down on saturated fat. This includes butter, cheese, fatty meats, and processed foods.
• Include plant stanols and sterols. These are in fortified spreads. They can lower LDL cholesterol by up to 10%.
• Limit alcohol to within recommended guidelines, which is 14 units per week.

Physical activity:

• Aim for at least 150 minutes of moderate-intensity aerobic activity each week. Examples include brisk walking, cycling, or swimming.
• Do muscle-strengthening activities on 2 or more days per week.
• Even small increases in activity help your heart.

Smoking cessation:

• Smoking is the biggest risk factor for heart disease that you can change.
• The NHS Stop Smoking Service is free. It greatly improves your chances of quitting.
• Stopping smoking reduces your heart risk within weeks.

Blood pressure management:

• If you have high blood pressure, make sure it is well controlled.
• Amlodipine is a common companion medicine. See our amlodipine guide.

Weight management:

• Keeping a healthy BMI lowers heart risk. This is true even if your cholesterol levels are fine.
• NHS weight management services are available through your GP.

I always tell patients that atorvastatin works best as a team effort. The pill does its job, but lifestyle changes boost its benefits.

Not everyone tolerates atorvastatin. The NHS has clear options for those who need an alternative.

Switching to another statin:

If atorvastatin causes unbearable side effects, your GP might suggest:

• Rosuvastatin: This is a strong alternative. It uses a different metabolic pathway. It is not processed by CYP3A4.
• Pravastatin: This is less potent. However, some patients tolerate it better, especially for muscle symptoms.
• Simvastatin: This is an older option. It is now less often used first-line due to more drug interactions.

NICE advises trying at least one alternative statin. Do this before deciding a patient cannot tolerate statins.

Non-statin options:

• Ezetimibe: This lowers cholesterol absorption from the gut. It is often used with a lower statin dose. It can also be used alone if statins are truly not tolerated.
• PCSK9 inhibitors (alirocumab, evolocumab): These are very effective injectable treatments. They are available through specialist lipid clinics. They are for patients who cannot reach target cholesterol levels. NICE TA393 and TA394 set the rules for NHS funding.
• Bempedoic acid: This is a newer oral option (NICE TA694). It is for patients who cannot tolerate statins. It is often combined with ezetimibe.
• Inclisiran: This is a twice-yearly injection (NICE TA733). It is for secondary prevention in patients not meeting targets.

The main message is that there is always another option if atorvastatin is not right for you. Talk to your GP instead of just stopping treatment.