Is kidney function tested for lipitor dosage?

Is kidney function tested for Lipitor dosage?

Kidney function rarely influences Lipitor dosing. The drug is processed mainly by the liver and cleared through bile, so dose adjustments for kidney impairment are not required in most cases.

Why do doctors still check kidney function before prescribing Lipitor?

They routinely screen for kidney impairment because severe impairment can raise statin levels modestly and increase muscle-related side effects. Testing establishes a baseline before therapy begins.

What happens if a patient has severe kidney impairment?

In patients with end-stage renal disease on dialysis, Lipitor may be started at a lower dose. The manufacturer recommends 10 mg daily rather than the usual 10-20 mg starting dose.

How does Lipitor compare with other statins on kidney issues?

Unlike rosuvastatin, which has a specific adjustment guideline for kidney impairment, Lipitor maintains its full range of doses without official adjustment. This makes Lipitor a frequent choice for patients whose kidney function is uncertain at time of prescription.

When does patent expire for Lipitor?

Lipitor's compound patent expired in 2011, allowing generic atorvastatin to enter the market.