|Trade names||Pravachol, Selektine, others|
|Elimination half-life||1-3 hours|
|CompTox Dashboard (EPA)|
|Chemical and physical data|
|Molar mass||424.534 g·mol−1|
|3D model (JSmol)|
|(what is this?)|
Pravastatin, sold under the brand name Pravachol among others, is a statin medication, used for preventing cardiovascular disease in those at high risk and treating abnormal lipids. It should be used together with diet changes, exercise, and weight loss. It is taken by mouth.
Common side effects include joint pain, diarrhea, nausea, headaches, and muscle pains. Serious side effects may include rhabdomyolysis, liver problems, and diabetes. Use during pregnancy may harm the baby. Like all statins, pravastatin works by inhibiting HMG-CoA reductase, an enzyme found in liver that plays a role in producing cholesterol.
Pravastatin was patented in 1980 and approved for medical use in 1989. It is on the World Health Organization's List of Essential Medicines. It is available as a generic medication. In 2019, it was the 32nd most commonly prescribed medication in the United States, with more than 20 million prescriptions.
Pravastatin is primarily used for the treatment of dyslipidemia and the prevention of cardiovascular disease. It is recommended to be used only after other measures, such as diet, exercise, and weight reduction, have not improved cholesterol levels.
The evidence for the use of pravastatin is generally weaker than for other statins. The antihypertensive and lipid-lowering treatment to prevent heart attack trial (ALLHAT), failed to demonstrate a difference in all-cause mortality or nonfatal myocardial infarction/fatal coronary heart disease rates between patients receiving pravastatin 40 mg daily (a common starting dose) and those receiving usual care.
Adverse effects and contraindications
Pravastatin has undergone over 112,000 patient-years of double-blind, randomized trials using the 40 mg, once-daily dose and placebos. These trials indicate pravastatin is well tolerated and displays few noncardiovascular abnormalities in patients. However, side effects may occur. A doctor should be consulted if symptoms such as heartburn or headache are severe and do not go away.[medical citation needed]
These uncommon side effects should be promptly reported to the prescribing doctor or an emergency medical service:
- muscle pain, tenderness, or weakness
- lack of energy
- jaundice, yellowing of the skin or eyes
- pain in the upper right part of the stomach
- extreme tiredness
- unusual bleeding or bruising
- dark-colored urine
- loss of appetite
- flu-like symptoms
- difficulty breathing or swallowing
- swelling of the face, throat, tongue, lips, eyes, hands, feet, ankles, or lower legs
These symptoms should be reported to the prescribing doctor if they persist or increase in severity:[medical citation needed]
- memory loss or forgetfulness
Contraindications, conditions that warrant withholding treatment with pravastatin, include pregnancy and breastfeeding. Taking pravastatin while pregnant could lead to birth defects. While the amount of pravastatin ingested by an infant from breastfeeding is low, patients breastfeeding should not take pravastatin due to potential effects on the infant's lipid metabolism.
- Cimetidine (Tagamet)
- Colchicine (Colcrys)
- Cyclosporine (Neoral, Sandimmune)
- Ketoconazole (Nizoral)
- Additional cholesterol-lowering medications such as: fenofibrate (Tricor), gemfibrozil (Lopid), cholestyramine (Questran, Questran Light, Cholybar), and niacin (nicotinic acid, Niacor, Niaspan);
- Specific HIV protease inhibitors such as: lopinavir and ritonavir (Kaletra), and ritonavir (Norvir) taken with darunavir (Prezista); and spironolactone (Aldactone).
Pravastatin is cleared by the kidneys, giving it a distinct advantage over other statins when a potential for drug interactions using the hepatic pathway exists.[medical citation needed]
Mechanism of action
Pravastatin acts as a lipoprotein-lowering drug through two pathways. In the major pathway, pravastatin inhibits the function of hydroxymethylglutaryl-CoA (HMG-CoA) reductase. As a reversible competitive inhibitor, pravastatin sterically hinders the action of HMG-CoA reductase by occupying the active site of the enzyme. Taking place primarily in the liver, this enzyme is responsible for the conversion of HMG-CoA to mevalonate in the rate-limiting step of the biosynthetic pathway for cholesterol. Pravastatin also inhibits the synthesis of very-low-density lipoproteins, which are the precursor to low-density lipoproteins (LDL). These reductions increase the number of cellular LDL receptors, thus LDL uptake increases, removing it from the bloodstream. Overall, the result is a reduction in circulating cholesterol and LDL. A minor reduction in triglycerides and an increase in high-density lipoproteins (HDL) are common.
Initially known as CS-514, pravastatin is a derivative of ML236B (compactin), which was identified in a fungus called Penicillium citrinum in the 1970s by researchers of the Sankyo Pharma Inc. It is being marketed outside Japan by the pharmaceutical company Bristol-Myers Squibb. In 2005, Pravachol was the 22nd-highest selling brand-name drug in the United States, with sales totaling $1.3 billion.
The Food and Drug Administration (FDA) approved generic pravastatin for use in the United States on 24 April 2006. Generic pravastatin sodium tablets were manufactured by Biocon Ltd, India and TEVA Pharmaceuticals in Kfar Sava, Israel.
- Neuvonen PJ, Backman JT, Niemi M (2008). "Pharmacokinetic comparison of the potential over-the-counter statins simvastatin, lovastatin, fluvastatin and pravastatin". Clinical Pharmacokinetics. 47 (7): 463–74. doi:10.2165/00003088-200847070-00003. PMID 18563955. S2CID 11716425.
- "Pravastatin Sodium Monograph for Professionals". Drugs.com. AHFS. Retrieved 23 December 2018.
- Fischer, Janos; Ganellin, C. Robin (2006). Analogue-based Drug Discovery. John Wiley & Sons. p. 472. ISBN 9783527607495.
- World Health Organization (2021). World Health Organization model list of essential medicines: 22nd list (2021). Geneva: World Health Organization. hdl:10665/345533. WHO/MHP/HPS/EML/2021.02.
- "The Top 300 of 2019". ClinCalc. Retrieved 16 October 2021.
- "Pravastatin - Drug Usage Statistics". ClinCalc. Retrieved 16 October 2021.
- "Pravachol". The American Society of Health-System Pharmacists. Retrieved 3 April 2011.
- ALLHAT Officers and Coordinators for the ALLHAT Collaborative Research Group. The Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (December 2002). "Major outcomes in moderately hypercholesterolemic, hypertensive patients randomized to pravastatin vs usual care: The Antihypertensive and Lipid-Lowering Treatment to Prevent Heart Attack Trial (ALLHAT-LLT)". JAMA. 288 (23): 2998–3007. doi:10.1001/jama.288.23.2998. PMID 12479764.
- Pfeffer MA, Keech A, Sacks FM, Cobbe SM, Tonkin A, Byington RP, Davis BR, Friedman CP, Braunwald E (May 2002). "Safety and tolerability of pravastatin in long-term clinical trials: prospective Pravastatin Pooling (PPP) Project". Circulation. 105 (20): 2341–6. doi:10.1161/01.cir.0000017634.00171.24. PMID 12021218.
- Williams E. "Pravachol Side Effects Center". RxList. Retrieved 1 December 2012.
- "Pravastatin". LactMed. U.S. National Library of Medicine. Retrieved 1 December 2012.
- "Pravafenix EPAR". European Medicines Agency (EMA). Retrieved 25 April 2020.
- Vaughan CJ, Gotto AM (August 2004). "Update on statins: 2003". Circulation. 110 (7): 886–92. doi:10.1161/01.CIR.0000139312.10076.BA. PMID 15313959.
- Tobert JA (July 2003). "Lovastatin and beyond: the history of the HMG-CoA reductase inhibitors". Nature Reviews. Drug Discovery. 2 (7): 517–26. doi:10.1038/nrd1112. PMID 12815379. S2CID 3344720.
- "FDA Approves First Generic Pravastatin". Food and Drug Administration (FDA) (Press release). Archived from the original on 6 March 2010. Retrieved 20 January 2008.