"Nov. 29, 2011 -- The cholesterol-lowering drug Lipitor -- the best-selling prescription drug in world history -- will be available as a generic drug beginning Nov. 30.
Lipitor's generic name is atorvastatin. Two generic drugmakers, Ra"...
ZOCOR (simvastatin) is a lipid-lowering agent that is derived synthetically from a fermentation product of Aspergillus terreus. After oral ingestion, simvastatin, which is an inactive lactone, is hydrolyzed to the corresponding β-hydroxyacid form. This is an inhibitor of 3-hydroxy-3-methylglutaryl-coenzyme A (HMG-CoA) reductase. This enzyme catalyzes the conversion of HMG-CoA to mevalonate, which is an early and rate-limiting step in the biosynthesis of cholesterol.
Simvastatin is butanoic acid, 2,2-dimethyl-,1,2,3,7,8,8a-hexahydro-3,7-dimethyl-8-[2-(tetrahydro-4- hydroxy-6-oxo-2H-pyran-2-yl)-ethyl]-1-naphthalenyl ester, [1S-[1α,3α,7β,8β(2S*,4S*),-8aβ]]. The empirical formula of simvastatin is C25H38O5 and its molecular weight is 418.57. Its structural formula is:
Simvastatin is a white to off-white, nonhygroscopic, crystalline powder that is practically insoluble in water, and freely soluble in chloroform, methanol and ethanol.
Tablets ZOCOR for oral administration contain either 5 mg, 10 mg, 20 mg, 40 mg or 80 mg of simvastatin and the following inactive ingredients: ascorbic acid, citric acid, hydroxypropyl cellulose, hypromellose, iron oxides, lactose, magnesium stearate, microcrystalline cellulose, starch, talc, and titanium dioxide. Butylated hydroxyanisole is added as a preservative.
What are the possible side effects of simvastatin (Zocor)?
Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
Stop taking simvastatin and call your doctor at once if you have any of these serious side effects:
- unexplained muscle pain, tenderness, or weakness;
- fever, unusual tiredness, and dark colored urine;
- pain or burning when you urinate;
- swelling, weight gain, urinating less than usual or not at all; or
- nausea, upper stomach pain, itching, loss of appetite, dark urine, clay-colored...
What are the precautions when taking simvastatin (Zocor)?
Before taking simvastatin, tell your doctor or pharmacist if you are allergic to it; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.
Before using this medication, tell your doctor or pharmacist your medical history, especially of: liver disease, kidney disease, alcohol use.
Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).
Limit alcoholic beverages. Daily use of alcohol may increase your risk for liver problems, especially when combined with simvastatin. Ask your doctor or pharmacist for more information.
Older adults may be...
Last reviewed on RxList: 11/14/2012
This monograph has been modified to include the generic and brand name in many instances.
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