Atorvastatin is a prescription medicine used to lower cholesterol and reduce the risk of cardiovascular events such as heart attacks and strokes. It belongs to a class of drugs called statins (or HMG-CoA reductase inhibitors).
How atorvastatin works
Atorvastatin blocks an enzyme in the liver involved in making cholesterol. This causes the liver to:
- Produce less LDL cholesterol (“bad” cholesterol)
- Remove more LDL cholesterol from the blood
- Modestly increase HDL cholesterol (“good” cholesterol) in some people
- Lower triglycerides
Why it is commonly prescribed
Doctors often prescribe atorvastatin for people who:
- Have high LDL cholesterol
- Have or are at high risk for coronary artery disease
- Have had a heart attack, stroke, or certain types of vascular disease
- Have diabetes or other risk factors that increase cardiovascular risk
- Need cholesterol reduction despite lifestyle changes such as diet and exercise
Lowering LDL cholesterol can help slow the buildup of fatty plaques in arteries (atherosclerosis) and reduce the chance of serious cardiovascular problems.
Common side effects
Many people take atorvastatin without major problems, but possible side effects include:
- Muscle aches or soreness
- Headache
- Digestive symptoms (such as nausea or diarrhea)
- Mild increases in liver enzymes on blood tests
Rare but serious side effects can include:
- Severe muscle pain, weakness, or dark urine (possible muscle injury)
- Signs of liver problems (such as yellowing of the skin/eyes or unusual fatigue)
Important considerations
- Tell your healthcare provider about all medicines and supplements you take because atorvastatin can interact with some drugs.
- Avoid or limit large amounts of grapefruit or grapefruit juice, as it can increase atorvastatin levels in the body.
- Regular follow-up and cholesterol testing help determine whether the dose is working.
If you are asking because of a possible interaction (for example, magnesium, supplements, or another medication with atorvastatin), tell me what else you are taking and I can check the specific concern.
