A cholesterol-absorption inhibitor
Ezetimibe
A cholesterol-lowering tablet that works in the gut rather than the liver — used alongside a statin for extra LDL lowering, or on its own when a statin cannot be taken.
What is Ezetimibe?
Ezetimibe lowers "bad" LDL cholesterol by reducing how much cholesterol the gut absorbs from food and bile. It is usually added to a statin when more lowering is needed, or used on its own for people who cannot tolerate statins. It is a once-daily tablet, generally very well tolerated, and does not cause the muscle effects associated with statins.
Education and reference only. This is a plain-language guide to Ezetimibe — it deliberately contains no doses. Doses depend on the person, the brand and the reason for treatment, and belong with your prescriber. Always check the BNF, the product labelling (SmPC) and follow medical advice.
What it is
Ezetimibe is a cholesterol-lowering medicine that works in a completely different way from statins: instead of reducing cholesterol production in the liver, it reduces the amount of cholesterol absorbed from the gut. This makes it a useful partner to a statin — the two together lower LDL cholesterol more than either alone — and a valuable option on its own for people who cannot take a statin. It is taken as a once-daily tablet and is available combined with a statin in a single pill.
How it works
Ezetimibe blocks a specific transporter (NPC1L1) in the lining of the small intestine that the body uses to absorb cholesterol — both from food and from bile. With less cholesterol absorbed, the liver draws more LDL cholesterol out of the blood to make up the shortfall, so blood LDL levels fall. Because it acts in the gut rather than in muscle or liver metabolism, it adds to a statin’s effect without adding to statin-type muscle side effects.
What it treats
Conditions Ezetimibe is used for
Practical use
How to take Ezetimibe
General, dose-free guidance — always follow your prescriber's and the leaflet's specific instructions.
- Take one tablet once a day, at any consistent time, with or without food.
- If you also take a statin, keep taking both (or use the combined tablet) for the added benefit.
- If you take a bile-acid binding medicine (such as colestyramine), take ezetimibe at least 2 hours before or 4 hours after it.
- Take it long-term; the cholesterol benefit only lasts while you take it.
- Report significant muscle pain if you also take a statin, as a precaution.
Weighing it up
Advantages & disadvantages of Ezetimibe
Advantages
- Adds meaningful extra LDL lowering on top of a statin, through a different mechanism.
- Generally very well tolerated; does not usually cause muscle side effects.
- A useful option for people who cannot take statins; available as a convenient combined tablet.
Disadvantages
- Less powerful on its own than a statin.
- Best evidence is for use alongside a statin rather than instead of one.
- Occasionally causes digestive upset or, rarely, muscle symptoms (mainly when combined with a statin).
Practical use
Good to know
Ezetimibe is usually very well tolerated and does not typically cause the muscle aches that some people associate with statins, which is one reason it suits people who have struggled with statins. It gives a useful additional drop in LDL cholesterol on top of a statin, and combination tablets make this convenient. Like statins, it is taken long-term — the benefit continues only while you take it. It can be taken at any time of day, with or without food. If you take a bile-acid sequestrant (another cholesterol medicine), separate the doses.
Who should not take it / use with caution
- When combined with a statin, the statin’s cautions apply — active liver disease, and pregnancy or breastfeeding.
- Used with care in significant liver impairment.
- Pregnancy and breastfeeding, particularly in combination with a statin.
Monitoring
- Cholesterol (lipid) levels to confirm response
- Liver blood tests if combined with a statin
- Muscle symptoms if combined with a statin
Side effects
- Often none — it is usually very well tolerated.
- Occasionally digestive upset (diarrhoea, wind), tiredness or muscle/joint aches.
- Rarely, muscle problems or liver-enzyme rises, mainly when taken with a statin.
Key interactions
- Bile-acid sequestrants (such as colestyramine) reduce its absorption — separate the doses.
- Ciclosporin can raise ezetimibe levels; ezetimibe can slightly raise ciclosporin levels — monitored.
- When combined with a statin, care is needed with medicines that increase statin-related muscle risk.
Available as: Tablets, including a combined tablet with a statin (e.g. ezetimibe with simvastatin or atorvastatin).
Answers
Ezetimibe: frequently asked questions
How is ezetimibe different from a statin?
A statin lowers cholesterol by reducing how much the liver makes, while ezetimibe lowers it by reducing how much the gut absorbs. Because they work in different places, they add up well together — and ezetimibe does not usually cause the muscle aches some people get with statins.
Can I take ezetimibe instead of a statin?
It can be used on its own if you cannot take a statin, and it will lower your cholesterol — but on its own it is less powerful, and the strongest evidence for reducing heart attacks and strokes is for statins (and for ezetimibe added to a statin). Your doctor will weigh up the best option for you.
When should I take it?
At any consistent time of day, with or without food. If you take a bile-acid binding medicine such as colestyramine, separate the two — take ezetimibe at least 2 hours before or 4 hours after it — so it is absorbed properly.
Will it give me muscle aches like a statin?
On its own, ezetimibe does not usually cause muscle aches, which is why it suits people who have not tolerated statins. When taken together with a statin, the usual statin advice applies — report severe or persistent muscle pain.
Authoritative sources
- BNF: Ezetimibe.
- electronic Medicines Compendium (SmPC): Ezetimibe (Ezetrol).
- NICE CG181: Cardiovascular disease – risk assessment and reduction.
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