Standard Lipitor Dosing
Lipitor (atorvastatin) dosing starts at 10-20 mg once daily for most adults with high cholesterol or cardiovascular risk, titrated up to 80 mg based on response and LDL goals. It's taken orally, any time of day, with or without food.[1]
Adjustments for Elderly Patients
No specific dose adjustment is needed for patients over 65 solely due to age. Use the standard starting dose of 10 mg daily, as elderly patients may have higher drug exposure from reduced clearance. Monitor closely for muscle pain or liver enzyme elevations, and consider lower doses if renal or hepatic impairment exists.[1][2]
Why Elderly May Need Caution
Pharmacokinetics show atorvastatin's AUC increases about 40% in those over 65, raising myopathy risk. Start low (10 mg) and titrate slowly while checking lipids and CK levels.[1]
Common Side Effects in Elderly
Muscle weakness (5-10%), elevated liver enzymes (1-3%), and rare rhabdomyolysis. Elderly are more prone due to polypharmacy and frailty—discontinue if CK >10x upper limit.[1][2]
Drug Interactions to Watch
Avoid with strong CYP3A4 inhibitors like clarithromycin (common in elderly); reduce Lipitor to 20 mg max. fibrates or niacin increase myopathy risk—monitor.[1]
[1] Lipitor (atorvastatin) Prescribing Information, Pfizer, https://labeling.pfizer.com/ShowLabeling.aspx?id=557
[2] Lexicomp/UpToDate: Atorvastatin Dosing in Geriatrics, https://www.uptodate.com/contents/atorvastatin-drug-information