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Medications to lower blood cholesterol levels are
reserved for people at high risk for heart disease
or those with known vascular disease (stroke,
myocardial infarction, peripheral vascular disease).
Middle aged and older men and women
with vascular disease or diabetes are
helped from a drug class known as the ‘statins’, no matter what their cholesterol
levels are. Patients with diabetes are at a greater risk of vascular disease,
and need strong treatment.
Most often, patients without vascular disease who have
high cholesterol with or without other risk factors should try diet,
exercise, and weight loss (if overweight) prior to using medications.
Those with high cholesterol or high triglycerides, overweight, diabetes,
and any vascular disease should see a nutritionist before starting
medications. Patients with known vascular disease may need
medications right away. Even so, lifestyle changes are still very vital lowering
your risk.
Lowering cholesterol with medication
Several types of drugs are available for cholesterol lowering, including
statins, bile acid sequestrants, niacin, and fibric acids. Based on the different
types of medications available, your doctor can help decide which one is
best for you.
• Statins. Proven to be highly effective and well tolerated in most
patients, statins are now regarded as the treatment of choice for lowering“bad” cholesterol levels. These include atorvastatin (Lipitor®), fluvastatin
(Lescol®), lovastatin (Mevacor®), pravastatin (Pravachol®), and simvastatin
(Zocor®). While the frequency of side effects with these medications is generally
very low, nausea, gas, constipation, and abdominal cramping may occur.
Headache, muscle pain, and liver problems have been reported in some cases.
• Bile acid sequestrants. These drugs also lower LDL levels and can be
used alone or in combination with statin drugs. This type of drug includes
cholestyramine (Questran®), colestipol (Colestid®), and colesevelam (Welchol®).
Bile acid sequestrants can cause intolerable gastrointestinal effects (such as bloating,
gas, abdominal pain, and constipation) at the level of dosage required to lower
LDL cholesterol levels. Because of these potential side effects, these drugs are
mostly added to statins when further lowering of total cholesterol or LDL cholesterol
is needed. They also can be used alone for patients who cannot take statins.
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• Niacin (nicotinic acid). Niacin, a B vitamin, lowers LDL and triglyceride
levels, and raises HDL cholestero levels. It is the most effective drug available for
raising HDL cholesterol levels. Side effects include hot flashes, nausea, indigestion, gas, and high blood sugar. A few years ago, the Food and Drug
Administration approved a new prescription medication called Advicor® that
combines niacin to boost “good” cholesterol and lovastatin to lower “bad” cholesterol.
• Fibric acids. These medications lower LDL somewhat but are used
mainly to treat high triglyceride and low HDL levels. Three fibrates are currently
available in the United States: gemfibrozil (Lopid®), fenofibrate (Tricor®),
and clofibrate (Atromid-S®). Fibrates are generally
well tolerated but can occasionally
cause some side effects such as nausea,
bloating, gas, and the formation of gallstones.
Since these drugs are only somewhat
effective in lowering “bad” cholesterol
levels, fibrates are often used in conjunction
with another drug, such as statins, to
reduce LDL levels.
What about estrogens?
It is true that estrogen helps to decrease LDL cholesterol
levels in postmenopausal women. For a long time,
experts in the field of women’s health and heart disease considered
estrogen replacement therapy (or hormone replacement therapy)
an effective way to reduce a postmenopausal woman’s risk of developing
future heart disease. However, a number of large, well-designed studies published
in the medical literature in the last few years have failed to find that estrogen
replacement helps prevent future risks of heart disease. For some women,
hormone replacement therapy may even increase the risk for developing future
manifestations of heart disease. Until we learn more about what types of
women, if any, receive cardiovascular benefit from taking hormone replacement
therapy, estrogen taken alone or in combination with progesterone should not
be used for treating high cholesterol levels. The other medications (e.g. statins)
currently available for lowering LDL cholesterol levels appear as equally effective
for women as men.
Other steps
In addition to medication to lower your “bad” (LDL) cholesterol goal has
been reached, your doctor may prescribe other measures to lower your triglycerides,
increase your level of “good” (HDL) cholesterol, or both. The treatment
includes losing weight if needed, increasing physical activity, quitting smoking,
and a low fat — high fiber diet. |