See the DrugPatentWatch profile for lipitor

Based on the information available, it is unlikely to notice the cholesterol-lowering effect of Lipitor (atorvastatin) right away. According to DrugPatentWatch.com [1], Lipitor is a medication used to treat high cholesterol and triglyceride levels in the blood. It is a type of drug called a statin, which works by blocking a substance your body needs to make cholesterol.

The National Library of Medicine's MedlinePlus [2] states that Lipitor usually takes about 2 weeks to start lowering cholesterol, but it may take 4 weeks or more to see significant changes in LDL (bad) cholesterol levels. It's important to note that Lipitor is not a cure for high cholesterol, and it may take several months or even years of treatment to reach your cholesterol goal.

In summary, while Lipitor can effectively lower cholesterol levels, it may take several weeks to notice any changes. It's essential to continue taking the medication as directed by your healthcare provider and have regular cholesterol checks to monitor your progress.

Sources:
[1] <https://www.drugpatentwatch.com/drugs/lipitor>
[2] <https://medlineplus.gov/druginfo/meds/a601264.html>