What is the standard dosage of atorvastatin for high cholesterol?

Standard Starting Dosage for High Cholesterol

Adults with high cholesterol typically start atorvastatin (Lipitor) at 10-20 mg once daily, taken at any time but ideally at night due to cholesterol production peaking then. Doctors adjust based on LDL reduction needs, blood lipids, and cardiovascular risk.[1][2]

Dosage by Cholesterol Severity and Risk

• Primary prevention (no heart disease): 10 mg daily often suffices for moderate high cholesterol.
  
• High-risk patients (e.g., diabetes, prior heart attack): 20-40 mg daily.
  
• Very high LDL or atherosclerotic disease: Up to 80 mg daily as maximum.
  Most patients reach target LDL with 10-40 mg; higher doses increase side effect risk without proportional benefit.[1][3]
  
  

How Doctors Titrate the Dose

Start low (10 mg), check lipids after 2-4 weeks, then increase every 2-4 weeks if needed. Aim for at least 50% LDL drop or specific targets like <100 mg/dL for high-risk cases. No loading dose required.[2][4]

Special Populations and Adjustments

• Elderly (≥65 years): Start at 10 mg; max 20-40 mg due to higher muscle risk.
  
• Kidney/liver impairment: Reduce to 10-20 mg; avoid high doses.
  
• Asian patients: Start at 10 mg, as they achieve higher blood levels.
  Children (10+ years) with familial hypercholesterolemia: 10-20 mg daily.[1][3]
  
  

Common Side Effects at Standard Doses

Muscle pain (5-10% at 10-40 mg, higher at 80 mg), liver enzyme rises (rare), digestive issues. Risk rises with statins like fibrates or high alcohol use. Monitor CK levels if symptoms appear.[2][4]

What If You Miss a Dose or Overdose

Take missed dose as soon as remembered unless near next one—skip and resume schedule. Overdose (e.g., >80 mg) may cause liver/muscle damage; seek emergency care.[1]

Sources
[1]: FDA Lipitor Label
[2]: Mayo Clinic Atorvastatin Dosing
[3]: UpToDate Hyperlipidemia Management
[4]: Drugs.com Atorvastatin Dosage