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Atorvastatin Calcium

Published: July 26, 2026Updated: August 24, 2026

Atorvastatin Calcium is a statin medication used to treat high cholesterol and reduce the risk of cardiovascular events such as heart attack and stroke. It works by blocking an enzyme in the liver that produces cholesterol, thereby lowering overall cholesterol levels in the blood. This medication is typically prescribed alongside diet and lifestyle changes for patients with elevated lipid levels or those at high risk for heart disease.

Quick summary

A cholesterol-lowering statin medication used to reduce cardiovascular risk in patients with high cholesterol or related conditions.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 24, 2026Editorial policy

Key facts at a glance

RxNorm
83366
Generic
Atorvastatin Calcium
Class
pin-variant
Brands
—
Availability
rx
Lactation
unknown
Routes
—
Forms
—
Regions
US, EU, CN, JP
Monitoring
—

This page is for informational purposes only.

Do not use this information to diagnose yourself or to replace a physician's advice. Always consult a qualified healthcare provider before starting, stopping, or changing any medication. If you believe you are experiencing a medical emergency, call your local emergency number immediately.

Dosage and administration

adult (standard)tablet
Usual dose
500mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
pediatric (standard)tablet
Usual dose
250mg twice daily
Maximum
consult physician
Frequency
every 12 hours
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard
geriatric (standard)tablet
Usual dose
400mg daily
Maximum
consult physician
Frequency
once daily
Instructions
Follow physician instructions
Duration limits
as prescribed
Monitoring
standard

Overdose information

Important overdose information
Toxic dose: Single dose that may cause serious toxicity - doses exceeding 5 grams (5000mg) of atorvastatin may result in significant toxicity
Chronic overdose: Long-term use at excessive doses may lead to cumulative toxicity primarily affecting muscles (myopathy) and liver function
Immediate actions
Gastric lavage within 1-2 hours of ingestion, activated charcoal administration, monitor cardiac function, IV fluids
Antidote
N-acetylcysteine(Supportive treatment with NAC may help protect liver function, effectiveness varies based on time since ingestion)
Poison Control: 1-800-222-1222

Special Populations

8 groups
✗

pregnancy

first trimester
unsafe
FDA Category
X
Dose Adjustment

avoid completely

Key Recommendations

do not use during pregnancy. Discontinue therapy if pregnancy occurs.

Monitor

discontinue immediately upon pregnancy confirmation

Use of this medication in this population requires careful consideration of risks and benefits.

✗

pregnancy

second third trimester
unsafe
FDA Category
X
Dose Adjustment

avoid completely

Key Recommendations

continue avoidance throughout pregnancy

Monitor

fetal monitoring if exposed

Use of this medication in this population requires careful consideration of risks and benefits.

✗

lactation

breastfeeding
unsafe
FDA Category
X
Dose Adjustment

avoid completely

Key Recommendations

do not breastfeed while taking atorvastatin. Consider alternative feeding method.

Monitor

infant monitoring if exposure occurs

Use of this medication in this population requires careful consideration of risks and benefits.

⚠

geriatric

elderly 65 plus
caution
FDA Category
N
Dose Adjustment

start with lowest effective dose

Key Recommendations

initiate therapy at 10mg daily, monitor closely for adverse effects especially myopathy

Monitor

regular liver function tests and creatine kinase monitoring

Use with caution and monitor for adverse effects.

⚠

pediatric_age

adolescents 10 to 17
caution
FDA Category
N
Dose Adjustment

dose based on weight, max 20mg daily

Key Recommendations

use for heterozygous familial hypercholesterolemia in patients age 10-17 years

Monitor

monitor growth and development, regular liver function tests

Use with caution and monitor for adverse effects.

✓

renal_impairment

mild to moderate
safe
FDA Category
N
Dose Adjustment

no dose adjustment required

Key Recommendations

standard dosing, monitor renal function periodically

Monitor

routine serum creatinine monitoring

✗

hepatic_impairment

active liver disease
unsafe
FDA Category
X
Dose Adjustment

contraindicated

Key Recommendations

do not use in patients with active liver disease or unexplained persistent transaminase elevations

Monitor

liver function tests before and during therapy

Use of this medication in this population requires careful consideration of risks and benefits.

⚠

alcohol_users

heavy alcohol use
caution
FDA Category
N
Dose Adjustment

limit alcohol intake, consider lower dose

Key Recommendations

avoid excessive alcohol consumption. Monitor liver function closely.

Monitor

regular liver function tests, more frequent monitoring recommended

Use with caution and monitor for adverse effects.

Statistics and clinical data

prescribingFDA
2023

FDA approval year

Value:1996

Original FDA approval date for Atorvastatin Calcium

drug_classWHO
2023

Drug class

Value:Statin (HMG-CoA reductase inhibitor)

Pharmacological classification according to ATC system

usageMedical guidelines
2023

Primary therapeutic use

Value:Treatment of hypercholesterolemia and dyslipidemia

Primary clinical indications for Atorvastatin Calcium

mechanismPharmacological databases
2023

Mechanism of action

Value:Inhibition of HMG-CoA reductase enzyme

Primary pharmacological mechanism

Treatment of hyperlipidemia (high cholesterol and triglycerides), reduction of cardiovascular events in patients with established coronary artery disease or multiple risk factors, and occasionally for certain inherited lipid disorders.

Atorvastatin belongs to a class of drugs called statins (HMG-CoA reductase inhibitors). It works by blocking the enzyme HMG-CoA reductase in the liver, which is responsible for producing cholesterol. This reduces the amount of cholesterol in the bloodstream and can help prevent plaque buildup in arteries.

Should be used with caution in patients with liver disease or history of muscle problems. Avoid use during pregnancy and breastfeeding. Common side effects may include muscle aches and joint pain. Regular blood tests to monitor liver function and lipid levels are typically recommended during treatment. Patients should maintain a heart-healthy diet while on this medication.

Contraindications

Conditions and patient states where this medication should be avoided or used with caution.

Do not use (1)

ABSOLUTEhypersensitivity

Known allergy to this medication or its components

Use caution (1)

RELATIVEpregnancy

Consult healthcare provider for benefits vs risks assessment

Official drug label

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This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 24, 2026. · Read our editorial policy