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Generic name: ezetimibe
Brand name: Zetia
Dosage form: oral tablet (10 mg)
Drug class: Cholesterol absorption inhibitors

Medically reviewed by  A Ras MD.

What is ezetimibe?

Ezetimibe is a  prescription medicine that is used to lower cholesterol.

Before taking ezetimibe, tell your doctor:

  • If you are allergic to ezetimibe; any part of this medicine; or any other drugs, foods, or substances. Tell your doctor about the allergy and what signs you had.
  • If you have liver disease or raised liver enzymes.
  • If you are pregnant.
  • If you are breast-feeding or plan to breast-feed.

This is not a list of all drugs or health problems that interact with ezetimibe.

Tell your doctor and pharmacist about all of your drugs (prescription or OTC, natural products, vitamins) and health problems. You must check to make sure that it is safe for you to take ezetimibe with all of your drugs and health problems. Do not start, stop, or change the dose of any drug without checking with your doctor.


Ezetimibe and Simvastatin Tablets contain ezetimibe USP, a selective inhibitor of intestinal cholesterol and related phytosterol absorption, and simvastatin USP, an HMG-CoA reductase inhibitor.

The chemical name of ezetimibe, USP is 1-(4-fluorophenyl)-3(R)-[3-(4-fluorophenyl)-3(S)-hydroxypropyl]-4(S)-(4-hydroxyphenyl)-2-azetidinone. The molecular formula is C24H21F2NO3 and its molecular weight is 409.4.

Ezetimibe, USP is a white, crystalline powder that is freely to very soluble in ethanol, methanol, and acetone and practically insoluble in water. Its structural formula is:

The structural formula of Ezetimibe is a white, crystalline powder that is freely to very soluble in ethanol, methanol, and acetone and practically insoluble in water.

Simvastatin, USP an inactive lactone, is hydrolyzed to the corresponding β-hydroxyacid form, which is an inhibitor of HMG-CoA reductase. Simvastatin, USP is butanoic acid, 2,2-dimethyl-,1,2,3,7,8,8a-hexahydro-3,7dimethyl-8-[2-(tetrahydro-4-hydroxy-6-oxo-2H-pyran-2-yl)-ethyl]-1-naphthalenyl ester, [1S-[1α,3α,7β,8β(2S*,4S*),-8aβ]]. The molecular formula of simvastatin, USP is C25H38O5 and its molecular weight is 418.57.

Simvastatin, USP is a white to off-white, nonhygroscopic, crystalline powder that is practically insoluble in water and freely soluble in chloroform, methanol and ethanol. Its structural formula is:

The structural formula of Simvastatin, USP is a white to off-white, nonhygroscopic, crystalline powder that is practically insoluble in water and freely soluble in chloroform, methanol and ethanol.

Ezetimibe and simvastatin is available for oral use as tablets containing 10 mg of ezetimibe USP, and 10 mg of simvastatin, USP (ezetimibe and simvastatin tablets 10 mg/10 mg), 20 mg of simvastatin, USP (ezetimibe and simvastatin tablets 10 mg/20 mg), 40 mg of simvastatin, USP (ezetimibe and simvastatin tablets 10 mg/40 mg), or 80 mg of simvastatin, USP (ezetimibe and simvastatin tablets 10 mg/80 mg). Each tablet contains the following inactive ingredients: ascorbic acid, butylated hydroxyanisole, citric acid anhydrous, croscarmellose sodium, hypromellose, iron oxide black, iron oxide red, iron oxide yellow, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and propyl gallate.

Mechanism of Action

Ezetimibe and Simvastatin

Plasma cholesterol is derived from intestinal absorption and endogenous synthesis. Ezetimibe and simvastatin contains ezetimibe and simvastatin, two lipid-lowering compounds with complementary mechanisms of action. Ezetimibe and simvastatin reduces elevated total-C, LDL-C, Apo B, TG, and non-HDL-C, and increases HDL-C through dual inhibition of cholesterol absorption and synthesis.


Ezetimibe reduces blood cholesterol by inhibiting the absorption of cholesterol by the small intestine. The molecular target of ezetimibe has been shown to be the sterol transporter, Niemann-Pick C1-Like 1 (NPC1L1), which is involved in the intestinal uptake of cholesterol and phytosterols. In a 2-week clinical study in 18 hypercholesterolemic patients, ezetimibe inhibited intestinal cholesterol absorption by 54%, compared with placebo. Ezetimibe had no clinically meaningful effect on the plasma concentrations of the fat-soluble vitamins A, D, and E and did not impair adrenocortical steroid hormone production.

Ezetimibe localizes at the brush border of the small intestine and inhibits the absorption of cholesterol, leading to a decrease in the delivery of intestinal cholesterol to the liver. This causes a reduction of hepatic cholesterol stores and an increase in clearance of cholesterol from the blood; this distinct mechanism is complementary to that of statins

What are some things I need to know or do while I take ezetimibe?

  • Tell all of your health care providers that you take ezetimibe. This includes your doctors, nurses, pharmacists, and dentists.
  • Have blood work checked as you have been told by the doctor. Talk with the doctor.
  • Follow the diet and workout plan that your doctor told you about.
  • Do not take colestipol or cholestyramine within 4 hours before or 2 hours after ezetimibe.
  • Use birth control that you can trust to prevent pregnancy while taking ezetimibe.
  • If you are pregnant or you get pregnant while taking ezetimibe, call your doctor right away.

How is ezetimibe best taken?

Use ezetimibe as ordered by your doctor. Read all information given to you. Follow all instructions closely.

  • Take with or without food.
  • Take ezetimibe at the same time of day.
  • Keep taking ezetimibe as you have been told by your doctor or other health care provider, even if you feel well.

What do I do if I miss a dose?

  • Take a missed dose as soon as you think about it.
  • If it is close to the time for your next dose, skip the missed dose and go back to your normal time.
  • Do not take 2 doses at the same time or extra doses.

What are the side effects of ezetimibe that I need to call my doctor about immediately?

WARNING/CAUTION: Even though it may be rare, some people may have very bad and sometimes deadly side effects when taking a drug. Tell your doctor or get medical help right away if you have any of the following signs or symptoms that may be related to a very bad side effect:

  • Signs of an allergic reaction, like rash; hives; itching; red, swollen, blistered, or peeling skin with or without fever; wheezing; tightness in the chest or throat; trouble breathing, swallowing, or talking; unusual hoarseness; or swelling of the mouth, face, lips, tongue, or throat.
  • Muscle pain or weakness.

What are some other side effects of ezetimibe?

All drugs may cause side effects. However, many people have no side effects or only have minor side effects. Call your doctor or get medical help if any of these side effects or any other side effects bother you or do not go away:

  • Joint pain.
  • Diarrhea.
  • Feeling tired or weak.

These are not all of the side effects that may occur. If you have questions about side effects, call your doctor. Call your doctor for medical advice about side effects.

You may report side effects to the FDA at 1-800-332-1088. You may also report side effects at https://www.fda.gov/medwatch.

If overdose is suspected:

If you think there has been an overdose, call your poison control center or get medical care right away. Be ready to tell or show what was taken, how much, and when it happened.

How do I store and/or throw out ezetimibe?

  • Store at room temperature.
  • Store in a dry place. Do not store in a bathroom.
  • Keep all drugs in a safe place. Keep all drugs out of the reach of children and pets.
  • Throw away unused or expired drugs. Do not flush down a toilet or pour down a drain unless you are told to do so. Check with your pharmacist if you have questions about the best way to throw out drugs. There may be drug take-back programs in your area.




  • NDC 45963-565-30
    Ezetimibe and Simvastatin Tablets
    10 mg/10 mg
  • Actavis
    30 Tablets
    Rx Only

10 mg 10 mg 30s

Imprint G80 - ezetimibe 10 mg




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