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Statin
Statins (or HMG-CoA reductase inhibitors) are a class of cholesterol lowering drugs that inhibit the enzyme HMG-CoA reductase which plays a central role in the production of cholesterol. High cholesterol levels have been associated with cardiovascular disease (CVD). Statins have been found to reduce cardiovascular disease and mortality in those who are at high risk. The evidence is strong that statins are effective for treating CVD in the early stages of a disease (secondary prevention) and in those at elevated risk but without CVD (primary prevention). Side effects of statins include muscle pain, increased risk of diabetes mellitus, and abnormalities in liver enzyme tests. Additionally, they have rare but severe adverse effects, particularly muscle damage.
As of 2010, a number of statins are on the market: atorvastatin, fluvastatin, lovastatin, pitavastatin, pravastatin, rosuvastatin and simvastatin. Several combination preparations of a statin and another agent, such as ezetimibe/simvastatin, are also available. In 2005 sales were estimated at $18.7 billion in the United States. The best-selling statin is atorvastatin, which in 2003 became the best-selling pharmaceutical in history.〔 The manufacturer Pfizer reported sales of US$12.4 billion in 2008.〔("Doing Things Differently" ), Pfizer 2008 Annual Review, April 23, 2009, p. 15.〕 Due to patent expirations, several statins are now available as less expensive generics.
==Medical uses==
Clinical practice guidelines generally recommend people to try "lifestyle modification", including a cholesterol-lowering diet and physical exercise, before statin use. Statins or other pharmacologic agents may be recommended for those who do not meet their lipid-lowering goals through diet and lifestyle changes. Statins appear to work equally well in males and females.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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