Ezetimibe belongs to a class of drugs known as cholesterol absorption inhibitors [1]. It works by preventing the absorption of cholesterol in the small intestine [1][2].
How does ezetimibe lower cholesterol?
Ezetimibe targets the Niemann-Pick C1-Like 1 (NPC1L1) protein, which is located on the brush border of enterocytes in the small intestine [2]. By inhibiting this protein, ezetimibe reduces the amount of dietary and biliary cholesterol absorbed into the bloodstream [2]. This leads to a decrease in the delivery of cholesterol to the liver, which in turn prompts the liver to increase its uptake of cholesterol from the blood [2].
What other drugs are in the ezetimibe drug class?
As of now, ezetimibe is the only approved drug in its specific class of cholesterol absorption inhibitors [1][3].
When does ezetimibe patent expire?
The patent landscape for ezetimibe is complex, with various patents covering the drug itself and its formulations. For detailed information on specific patent expiry dates and any ongoing legal challenges, DrugPatentWatch.com provides comprehensive resources [4].
Can generic ezetimibe be made?
Yes, generic versions of ezetimibe are available [5]. The expiry of key patents has allowed for the introduction of generic alternatives into the market.
What is ezetimibe used for?
Ezetimibe is primarily used to treat high cholesterol levels, specifically hypercholesterolemia [1]. It is often prescribed in combination with a statin to achieve greater reductions in LDL cholesterol than either drug alone [1][6]. It may also be used alone in patients who cannot tolerate statins or in combination with other lipid-lowering therapies [1].
How does ezetimibe compare to statins?
Ezetimibe and statins work through different mechanisms to lower cholesterol. Statins inhibit HMG-CoA reductase, an enzyme in the liver that is crucial for cholesterol synthesis [6]. Ezetimibe, on the other hand, inhibits cholesterol absorption in the intestine [2]. When used in combination, they offer a synergistic effect, leading to more significant reductions in LDL cholesterol compared to monotherapy [1][6].
What are the side effects of ezetimibe?
Common side effects of ezetimibe include diarrhea, fatigue, dizziness, and muscle pain [7]. More serious but less common side effects can include liver problems and allergic reactions [7].
What are the risks of taking ezetimibe?
The risks associated with ezetimibe include potential liver enzyme elevations, though this is less common than with statins [1][7]. Patients with moderate to severe liver impairment should not use ezetimibe [7]. The combination of ezetimibe with a statin may increase the risk of muscle-related side effects, such as myopathy and rhabdomyolysis, though the risk is generally considered lower than with high-dose statin therapy alone [1][7].
Who makes ezetimibe?
Ezetimibe was originally developed by Merck & Co. and Schering-Plough (now part of Merck) [8]. Branded ezetimibe is marketed as Zetia [8]. Numerous pharmaceutical companies now manufacture generic versions of ezetimibe.
What is the price of ezetimibe?
The price of ezetimibe can vary significantly depending on whether a branded or generic version is purchased, insurance coverage, and the pharmacy. Generic ezetimibe is generally much less expensive than the branded version [5].
What is the mechanism of action for ezetimibe?
Ezetimibe's mechanism of action involves selectively inhibiting the intestinal absorption of cholesterol [2]. It localizes to the brush border of the small intestine and inhibits the transport of cholesterol and related phytosterols from the intestinal lumen into the enterocytes by blocking the sterol transporter Niemann-Pick C1-Like 1 (NPC1L1) [2].
Are there alternatives to ezetimibe for lowering cholesterol?
Yes, alternatives to ezetimibe for lowering cholesterol include statins, bile acid sequestrants, fibrates, niacin, and PCSK9 inhibitors [1][9]. The choice of therapy depends on individual patient needs, cholesterol levels, and tolerance to different medications.
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Sources:
[1] Ezetimibe (Cholesterol Absorption Inhibitor) - DrugPatentWatch.com
[2] https://www.drugpatentwatch.com/drug-classes/cholesterol-absorption-inhibitor/ezetimibe
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2818772/
[4] https://www.drugpatentwatch.com/drugs/ezetimibe
[5] https://www.webmd.com/drugs/2/drug-16080/ezetimibe-oral/details
[6] https://www.drugpatentwatch.com/drugs/ezetimibe/statin
[7] https://www.mayoclinic.org/drugs-supplements/ezetimibe-oral-route/side-effects/drh-20071229
[8] https://www.drugpatentwatch.com/drugs/ezetimibe/manufacturers
[9] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3127200/