What dosage of lipitor is effective?

What dosage of Lipitor is effective

Lipitor (atorvastatin) is prescribed at 10 mg to 80 mg once daily, with 10 mg to 20 mg commonly started for high cholesterol. Effectiveness is measured by LDL reduction, which reaches 39% at 10 mg and 43% at 20 mg in clinical studies.

How does dosage relate to cholesterol reduction

Higher doses produce greater LDL drops. 40 mg brings reductions of 47–49%, and 80 mg reaches up to 55%. Most patients achieve target LDL levels with 20 mg or 40 mg rather than the 80 mg maximum.

What factors determine the right dosage

Age, kidney function, other medicines, and risk for muscle side effects guide doctors in choosing 10 mg or 20 mg as starting points. Patients who do not reach LDL targets on lower doses may have their prescription increased every four to six weeks.

Why are companies challenging this patent

Lipitor’s original patent expired in 2011. Since then, generic atorvastatin versions from multiple manufacturers have entered the market, lowering treatment costs.