Atorvastatin is a medication in a class called statins. It is commonly prescribed to help lower LDL cholesterol (“bad” cholesterol) and reduce the risk of cardiovascular events such as heart attacks and strokes.
How atorvastatin works
Atorvastatin blocks an enzyme in the liver involved in making cholesterol. This:
- lowers LDL cholesterol,
- can lower triglycerides,
- may slightly increase HDL cholesterol (“good” cholesterol),
- helps slow the buildup of fatty plaques in arteries.
Why doctors prescribe it
It may be recommended for people who:
- have high LDL cholesterol,
- have had a heart attack, stroke, or certain types of heart disease,
- have diabetes or other risk factors that increase cardiovascular risk,
- have a higher estimated risk of developing heart disease.
Common side effects
Many people tolerate atorvastatin well, but possible side effects include:
- muscle aches or weakness,
- headache,
- digestive symptoms (such as nausea or diarrhea),
- changes in liver enzyme levels on blood tests.
A rare but serious side effect is severe muscle injury (rhabdomyolysis), which may cause significant muscle pain, weakness, or dark-colored urine and requires urgent medical attention.
Important considerations
- Take it exactly as prescribed; don’t stop it suddenly without discussing it with your healthcare professional.
- Tell your clinician about all medications and supplements you take, because some can interact with atorvastatin.
- Lifestyle habits—such as a heart-healthy diet, exercise, and not smoking—work alongside the medication to reduce risk.
If you’re asking because you were prescribed atorvastatin, tell me the dose (for example, 10 mg, 20 mg, 40 mg, or 80 mg) and what it was prescribed for, and I can explain what that typically means.
