Dr. Ogbru received his Doctorate in Pharmacy from the University of the Pacific School of Pharmacy in 1995. He completed a Pharmacy Practice Residency at the University of Arizona/University Medical Center in 1996. He was a Professor of Pharmacy Practice and a Regional Clerkship Coordinator for the University of the Pacific School of Pharmacy from 1996-99.
Jay W. Marks, MD, is a board-certified internist and gastroenterologist. He graduated from Yale University School of Medicine and trained in internal medicine and gastroenterology at UCLA/Cedars-Sinai Medical Center in Los Angeles.
DRUG CLASS AND MECHANISM: Rosuvastatin is an oral drug for
lowering blood cholesterol levels. It belongs to a class of drugs called HMG-CoA reductase inhibitors, more commonly referred to as "statins". Other drugs in this class include simvastatin (Zocor), lovastatin (Mevacor), pravastatin (Pravachol), atorvastatin (Lipitor) and fluvastatin (Lescol). These drugs reduce cholesterol levels by inhibiting HMG-CoA reductase, an enzyme that produces cholesterol in the liver. Rosuvastatin and other statins lower blood total cholesterol as well as blood LDL cholesterol levels. LDL cholesterol is the "bad" type of cholesterol that increases the risk of coronary artery disease (atherosclerosis) and heart attacks. Lowering LDL cholesterol levels slows the progression of coronary artery disease and may even reverse it. Statins also increase HDL cholesterol, the "good" type of cholesterol, and reduce triglycerides.
Scientists have discovered that in addition to atherosclerosis, inflammation of the coronary arteries may also contribute to the development of heart attacks. The presence of inflammation can be determined by measuring a chemical in the blood called highly sensitive
C-reactive protein (Hs-CRP). Moreover, Hs-CRP can be used to predict the occurrence of heart attacks, strokes and death. Hs-CRP is, in fact, a better predictor of the risk for heart attacks than LDL cholesterol. Scientists have found that statins reduce the level of Hs-CRP in the body, presumably by reducing inflammation in the coronary arteries, and this may be another mechanism through which statins
prevent heart attacks,
strokes, and death. More research needs to be conducted, however, to confirm the importance of inflammation and the mechanisms through which statins work. Rosuvastatin was approved by the FDA in August 2003.
PRESCRIPTION: Yes
GENERIC AVAILABLE: No
PREPARATIONS: Tablets: 5, 10, 20, 40 mg
STORAGE: Store at room temperature between 2-25 C (36-77 F).
PRESCRIBED FOR: Rosuvastatin is used for the reduction of blood total cholesterol, HDL cholesterol and triglyceride levels, and to increase HDL cholesterol levels.
Rosuvastatin also is used for reducing the risk of heart attacks, stroke, and arterial revascularization procedures in patients without clinically evident
coronary heart disease but with multiple risk factors.
DOSING: The starting dose for most adults is 5 mg once daily. The maximum dose is 40 mg daily, and this dose should be reserved for patients who do not adequately respond to a 20 mg dose.
DRUG INTERACTIONS: When administered with cyclosporine, the blood level of rosuvastatin increases seven fold, and this could increase the side effects of rosuvastatin.
Rosuvastatin increases the action of the blood thinner warfarin
(Coumadin) and could increase the risk of bleeding from warfarin.
Antacids reduce the absorption of rosuvastatin and should be administered two hours after rosuvastatin.
The use of rosuvastatin with nicotinic acid, gemfibrozil or other drugs that may cause liver or muscle injury may increase the incidence of the muscle injury.
PREGNANCY: Statins should not be used by
pregnant women because there is a high risk of harm to the fetus.
A stroke results from impaired oxygen delivery to brain cells via the bloodstream. A stroke is also referred to as a CVA, or cerebrovascular incident. Symptoms of stroke include: sudden numbness or weakness of the face, arm or leg. Sudden confusion, trouble speaking or understanding. Sudden trouble seeing in one or both eyes, sudden trouble walking, dizziness, or loss of balance, and/or sudden severe headache with no known cause. A TIA, or transient ischemic attack is a short-lived temporary impairment of the brain caused by loss of blood supply. Stroke is a medical emergency.
Heart attack happens when a blood clot completely obstructs a coronary
artery supplying blood to the heart muscle. A heart attack can cause chest pain, heart failure, and electrical
instability of the heart.
Heart disease (coronary artery disease) is caused by a buildup of cholesterol deposits in the coronary arteries. Risk factors for heart disease include smoking, high blood pressure, heredity, diabetes, peripheral artery disease, and obesity. Symptoms include chest pain and shortness of breath. There are a variety of tests used to diagnose coronary artery disease. Treatment includes life-style changes, medications, procedures, or surgery.
Cholesterol is the most common type of steroid in the body. The treatment of elevated cholesterol involves not only diet but also weight loss, regular exercise, and medications. By understanding your cholesterol profile you can better manage your cholesterol levels.
Heart attacks are the major causes of unexpected, sudden death among men and women. A heart attack is also a significant cause of heart failure. Learn the risk factors for heart attack such as high blood pressure, diabetes, and other heart conditions. Lowering your risk factor, lifestyle changes, and in some cases medication are the most effective way of preventing a heart attack.
Cholesterol occurs naturally in the body. High blood cholesterol levels increase a person's risk of developing heart disease, heart attacks, strokes, TIAs, and more. In addition to medication (fibrates, statins, bile acid sequestrants, and niacin), lifestyle changes can be made to lower blood cholesterol levels
Brain cell function requires a constant delivery of oxygen and glucose from the bloodstream. A stroke, or cerebrovascular accident (CVA), occurs when blood supply to part of the brain is disrupted, causing brain cells to die. Blood flow can be compromised by a variety of mechanisms.
Blockage of an artery
Narrowing of the small arteries within the brain can cause a lacunar stroke, (lacune
means "empty space"). Blockage of a single arteriole can affect a tiny area of brain causing that tissue to
die (infarct).
Hardening of the arteries (atherosclerosis) leading to the brain. There are four major blood vessels that supply the brain with blood.
The anterior circulation of the brain that controls most motor activity, sensation, thought, speech, and emotion is supplied by the carotid arteries.
The posterior circulation, which supplies the brainstem and the cer...
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