Pitavastatin

Primary Uses

Pitavastatin is primarily prescribed to treat high cholesterol (hyperlipidemia) and other lipid disorders. It works by reducing the amount of cholesterol produced by the liver. Specifically, it is used to:

• Lower low-density lipoprotein (LDL) cholesterol, often called bad cholesterol.
• Lower total cholesterol levels.
• Lower triglycerides, a type of fat in the blood.
• Increase high-density lipoprotein (HDL) cholesterol, often called good cholesterol.

Who It Is For

This medication is used in adults and children at least 8 years of age who have certain types of high cholesterol, such as primary hyperlipidemia or mixed dyslipidemia. It is typically prescribed when lifestyle changes, such as diet, weight loss, and physical activity, have not been sufficient to reach target cholesterol levels.

Long-Term Benefits

By managing cholesterol levels, pitavastatin helps slow the buildup of plaque in the blood vessels, a condition known as atherosclerosis. This can help reduce the long-term risk of serious cardiovascular events, including heart attacks and strokes.

Mechanism of Action

Pitavastatin works by blocking a specific enzyme in the liver called HMG-CoA reductase. This enzyme is responsible for the production of cholesterol. By inhibiting this enzyme, the medication reduces the amount of cholesterol that the liver releases into the bloodstream.

Effects on Cholesterol Levels

When the liver produces less cholesterol, it begins to take up more cholesterol from the blood to compensate. This process results in several changes to your lipid profile:

• Lowering LDL cholesterol: Often called "bad" cholesterol, high levels of LDL can lead to plaque buildup in the arteries.
• Lowering triglycerides: These are another type of fat found in the blood that can increase the risk of heart disease when levels are too high.
• Increasing HDL cholesterol: Often called "good" cholesterol, HDL helps remove other forms of cholesterol from your bloodstream.

Long-term Benefits

By managing these cholesterol and fat levels, pitavastatin helps prevent the accumulation of fatty deposits, or plaque, on the walls of the blood vessels. Reducing this buildup helps keep blood flowing properly throughout the body and lowers the risk of serious cardiovascular events, such as heart attacks and strokes.

Common Side Effects

Many people using pitavastatin do not experience significant side effects. The most frequently reported issues include:

• Muscle pain or soreness
• Back pain
• Pain in the arms or legs
• Diarrhea
• Constipation

Serious Side Effects

While rare, pitavastatin can cause serious conditions. Contact a healthcare provider immediately if you notice:

• Muscle breakdown (rhabdomyolysis): Unexplained muscle pain, tenderness, or weakness, particularly if you also have a fever or dark-colored urine.
• Liver problems: Loss of appetite, upper stomach pain, unusual tiredness, dark urine, or yellowing of the skin or eyes.
• Kidney issues: Little or no urinating, or swelling in the feet or ankles.
• High blood sugar: Increased thirst, frequent urination, or blurred vision.
• Cognitive effects: Confusion or memory problems.

Get emergency medical help if you experience signs of a severe allergic reaction, such as a rash, swelling of the face or throat, severe dizziness, or trouble breathing.

Muscle and Kidney Risks

Pitavastatin can cause myopathy, which is characterized by muscle pain, tenderness, or weakness. In rare cases, this can progress to rhabdomyolysis, a severe condition where muscle tissue breaks down and may cause permanent kidney damage or death. The risk of muscle issues is higher for individuals aged 65 and older, those with kidney impairment, or those with untreated hypothyroidism.

Liver Health and Monitoring

This medication is contraindicated in people with active liver disease or unexplained, persistent elevations in liver enzymes. Healthcare providers typically perform liver enzyme tests before starting treatment. Monitoring may continue if symptoms of liver injury develop, such as unusual tiredness, loss of appetite, dark-colored urine, or yellowing of the skin and eyes.

Blood Sugar and Cognitive Effects

• Blood Glucose: Statin medications, including pitavastatin, have been associated with increased blood sugar levels and higher hemoglobin A1c (HbA1c) results.
• Cognitive Function: There have been rare reports of non-serious, reversible cognitive side effects, such as memory loss, forgetfulness, and confusion. These symptoms generally resolve after the medication is discontinued.

Pregnancy and Breastfeeding

Pitavastatin should not be used during pregnancy as it may cause harm to a developing fetus. Because of the potential for serious adverse reactions in nursing infants, breastfeeding is not recommended while taking this medication.

Drug Interactions

Certain medications can significantly increase the concentration of pitavastatin in the body, raising the risk of muscle injury. Pitavastatin is contraindicated for use with cyclosporine. Caution is also necessary when combining it with erythromycin, rifampin, or other cholesterol-lowering drugs such as fibrates or niacin.

Pregnancy

Pitavastatin is not recommended for use during pregnancy. Cholesterol and other products of cholesterol synthesis are essential for the healthy development of a fetus. Because pitavastatin works by reducing cholesterol production, it may cause fetal harm or birth defects. If you are planning to become pregnant or discover you are pregnant while taking this medication, you should stop taking it and contact your healthcare provider immediately.

Breastfeeding

It is not known if pitavastatin passes into human breast milk. However, because of the potential for serious adverse reactions in a nursing infant, breastfeeding is not recommended while using this medication. Patients should discuss alternative treatment options or infant feeding methods with their healthcare provider to ensure the safety of the child.

Dosage Forms

Pitavastatin is available in the following form:

• Oral Tablet: A film-coated tablet taken by mouth, typically once daily.

This medication is available in different strengths to allow for individualized treatment. It can be taken with or without food.

FDA Approval and Indications

The U.S. Food and Drug Administration (FDA) approved pitavastatin in 2009. It is indicated as an adjunct to diet to reduce elevated total cholesterol, low-density lipoprotein cholesterol (LDL-C), apolipoprotein B, and triglycerides, and to increase high-density lipoprotein cholesterol (HDL-C) in adults with primary hyperlipidemia or mixed dyslipidemia. It is also approved for use in pediatric patients aged 8 years and older with heterozygous familial hypercholesterolemia.

Class-Wide Safety Communications

In 2012, the FDA issued a safety communication regarding all statin medications, including pitavastatin, which led to several labeling changes:

• Liver Enzyme Monitoring: The FDA changed the recommendation for routine periodic monitoring of liver enzymes. Labels now state that liver enzyme tests should be performed before starting statin therapy and then only if symptoms of liver problems occur.
• Cognitive Effects: The FDA added information to statin labels regarding reports of generally non-serious and reversible cognitive side effects, such as memory loss and confusion.
• Blood Sugar Levels: Warnings were added noting that statins may increase blood sugar levels and hemoglobin A1c (HbA1c) levels.

Contraindications and Regulatory Warnings

Pitavastatin is contraindicated in patients with active liver disease, which may include unexplained persistent elevations of hepatic transaminase levels. It is also contraindicated in patients who are pregnant or breastfeeding. The FDA has not issued a boxed warning for pitavastatin, but the labeling includes warnings regarding the risk of myopathy and rhabdomyolysis, especially when used at higher doses or in combination with certain other medications like cyclosporine, erythromycin, or rifampin.

Generic and Brand-Name Options

Pitavastatin is available as a generic drug and as brand-name medications. Generic drugs usually cost less than brand-name versions because they do not require the same research and development investment. Choosing the generic version, if available and appropriate for your treatment, can significantly reduce your expenses.

Insurance and Pharmacy Factors

Most insurance plans cover statin medications, but the specific cost to you will depend on your plan's benefits. Some factors include:

• Formulary Status: Insurance companies categorize drugs into tiers. Lower tiers typically have lower copayments.
• Pharmacy Pricing: Different pharmacies may have different retail prices for the same medication.
• Quantity: Purchasing a 90-day supply may sometimes be more cost-effective than a 30-day supply, depending on your insurance plan.

It is helpful to contact your insurance provider or pharmacist to determine the exact cost for your specific prescription.