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LIPITOR |
Generic Name:
Atorvastatin
COMMON BRAND NAME(S):
Lipitor
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Uses: (1) Treats high blood cholesterol (in people with
Types IIa and lIb hypercholesterolemia) due to increased
fractions of low-density lipoprotein (LDL) cholesterol; (2)
also works in primary dysbetalipoproteinemia (Fredrickson Type
III) and in patients with elevated serum triglycerides
(Fredrickson Type IV). Used in conjunction with a
cholesterol-lowering diet. Should not be used until an
adequate trial of nondrug methods has proved to be
ineffective. NCEP ATP 3 recognizes therapeutic lifestyle
changes (TLC) as very important; (3) also helps familial
hypercholesterolemia; (4) approved to increase HDL-C (good
cholesterol) in people with primary hypercholesterolemia and
mixed dyslipidemia.
Other (unlabeled) generally accepted uses: (l) a New England
Journal of Medicine study found that atorvastatin was as
effective as getting an angioplasty when it was used to treat
stable heart (coronary) artery disease; (2) prevention of
coronary heart disease; (3) treats abnormal fat (lipid)
changes caused by protease inhibitors; (4) may help prevent
bone loss (osteoporosis) in type two diabetics and
osteoporosis in general; (5) may help prevent clogging (restenosis)
of tubes (stents) placed in coronary arteries; (6) starting
atorvastatin quickly after a sudden coronary problem (see
acute coronary syndromes in Glossary) may help lower the risk
of circulatory events (recurrent ischemic events) based on
results of the MIRACL trial; (7) ongoing use may help lower
the risk of dementia (such as Alzheimer's disease); (8) one
case-control study found a 20% reduction in cancer risk by "statin
type" medicines. Further research is needed.
How This Drug Works: Blocks a liver enzyme that starts
making cholesterol. Lowers low-density lipoproteins (LDL), the
cholesterol fraction thought to increase risk of coronary
heart disease. Since the amount of cholesterol is reduced in
the liver, the VLDL fraction may also be decreased. There is a
growing body of evidence that "statins" also have beneficial
changes on what is in the blood, blood flow and even the blood
vessel walls themselves (some of this may account for benefits
in decreasing Alzheimer's risk). Specific compounds'or effects
of platelet derived growth factor (PDGF), undesirable blood
clotting via thrombin-antithrombin III, thrombomodulin, and
other chemicals may be beneficially lowered or effects
mitigated by statins.
Available Dosage Forms and Strengths
Tablets - 10 mg, 20 mg, 40 mg, 80 mg
Recommended Dosage Ranges (Actual dosage and schedule
must be determined for each patient individually.)
Infants and Children: Data are not available.
18 to 65 Years of Age:
Cholesterol management: Patients are started on a typical low
cholesterol diet (see wW1.v.americanheart.org). Atorvastatin
dosing is started with 10 mg once daily. Patients who require
more than a 45% decrease in LDL can be started at 40 mg once a
day. The starting dose is increased (dose intensified) as
needed and tolerated to a maximum of 80 mg daily. Lipid levels
best rechecked within 2 to 4 weeks of starting or changing the
dose. Some clinicians are studying weekly divided dosing, but
conclusions are not yet made.
Acute Coronary Syndromes: (based on MIRACL data): 80 mg once a
day is started 24-96 hours after the patient goes into the
hospital (along with other medicines such as aspirin, beta
blockers, nitrates, and heparin).
Over 65 Years of Age: Some research shows that usual
doses may result in higher levels than seen in younger
patients. It appears prudent that the lowest dose (10 mg)
should be used and LDL-C levels be checked to guide any dose
increases. Dose increases must be made after weighing the
benefit~ and risks, mindful that any given dose may result in
a higher than expected blood level.
Conditions Requiring Dosing Adjustments
Liver Function: Caution should be used in patients with liver
compromise. In those with liver damage caused by alcohol,
removal from the body has been prolonged. A 10-mg dose appears
prudent. Like other HMG-CoA medicines, atorvastatin should not
be given during active liver disease.
Kidney Function: The manufacturer does not recommend dosing
changes.
Dosing Instructions: The tablet may be crushed or
split. Better taken on an empty stomach. Since cholesterol is
made at the fastest rate between midnight and 5 a.m., many
clinicians advise patients to take such medicines at bedtime.
If you forget a dose, take it immediately unless it is almost
time for your next dose. If your next dose is shortly due,
skip the missed dose and just take the next scheduled dose.
DO NOT double doses.
Usual Duration of Use: Use on a regular schedule for 2
to 4 weeks usually determines the effectiveness of this drug
in reducing blood levels of total and LDL-C cholesterol.
Increases in good cholesterol (HDL) may take longer. Use is
usually ongoing. Long-term use (months to years) requires
periodic physician evaluation and follow-up.
Please Note: The information contained on this page is intended as an
educational aid only. It is not intended as medical advice for
individual conditions or treatment. It is not a substitute for
a medical exam, nor does it replace the need for services
provided by medical professionals. Talk to your doctor, nurse
or pharmacist before taking any prescription or over the
counter drugs or following any treatment or regimen. Only your
doctor, nurse or pharmacist can provide you with advice on
what is safe and effective for you.
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