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The U.S. Food and Drug Administration (FDA) notified healthcare professionals of updates to the prescribing information concerning interactions between protease inhibitors and certain statin drugs. Protease inhibitors and statins taken together may increase the blood levels of statins and increase the risk for muscle injury (myopathy).
Statins with shorter half-lives are more effective when taken in the evening, so their peak effect occurs when the body's natural cholesterol production is at its highest. A recent meta-analysis suggested that statins with longer half-lives, including atorvastatin, may also be more effective at lowering LDL cholesterol if taken in the evening. [38]
The 3α-hydroxyisomeric metabolite of pravastatin is also an active HMG-CoA reductase inhibitor with approximately 2.5-10% the potency of the parent compound. Pravastatin has a plasma half-life of 1.8 hours whereas this active metabolite has a half-life up to 77 hours. [1]
Absorption half-life 1 h, elimination half-life 12 h. Biological half-life (elimination half-life, pharmacological half-life) is the time taken for concentration of a biological substance (such as a medication) to decrease from its maximum concentration (C max) to half of C max in the blood plasma.
In other words, as many as 4 million people in the U.S. who currently take statins for primary prevention — meaning they have not had a cardiovascular event such as a stroke or heart attack ...
A 2010 published meta-analysis found for every 255 patients taking a statin for 4 years, one additional case of diabetes would occur whilst preventing 5.4 major coronary events. [27] Some drugs interact with statins in a way that increases the risk of muscle injury called myopathy, characterized by unexplained muscle weakness or pain.