Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels. According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, which means that generic versions of the drug are now available. Switching from Lipitor to a generic version of atorvastatin may be a viable option for some patients.

A Harvard Health Blog article [2] explains that generic drugs are just as safe and effective as their brand-name counterparts. The article states that the FDA requires generic drugs to have the same active ingredients, strength, dosage form, and route of administration as the brand-name drug. Therefore, switching from Lipitor to a generic version of atorvastatin should not cause any significant changes in the medication's effectiveness or safety.

It is important to note that some patients may experience differences in side effects when switching from a brand-name drug to a generic version. However, the Harvard Health Blog article notes that these differences are usually minor and should not be a cause for concern.

Another resource, Ro [3], explains that generic atorvastatin is significantly less expensive than Lipitor. This may be a deciding factor for patients who are concerned about the cost of their medication.

In conclusion, switching from Lipitor to a generic version of atorvastatin is generally safe and effective. Patients should consult with their healthcare provider to determine if a switch to a generic version is appropriate for their individual needs.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.health.harvard.edu/blog/switching-to-generic-lipitor-201202064195
[3] https://ro.co/health-guide/generic-lipitor/