According to the sources provided, Lipitor (atorvastatin) is a medication commonly used to treat high cholesterol levels. While it is generally well-tolerated, there is a potential for it to worsen liver problems in some individuals.

The first source, Drug Patent Watch, does not provide specific information about the potential worsening of liver problems by Lipitor. It primarily provides information about the drug's patent status and generic availability.

However, the second source, Mayo Clinic, is a reputable medical institution that discusses the side effects of statins, including Lipitor. It states that statins, including Lipitor, can cause liver damage in rare cases. The risk is generally low, but individuals with a history of liver disease or heavy alcohol consumption may have a higher risk. The article advises individuals taking statins to have regular liver function tests to monitor for any potential issues.

The third source, Drugwatch, provides more detailed information about Lipitor's potential side effects. It mentions that Lipitor can cause liver damage, although it is rare. It advises individuals to seek immediate medical attention if they experience symptoms such as dark urine, yellowing of the skin or eyes, or persistent nausea and fatigue, as these could be signs of liver problems.

In conclusion, while Lipitor is generally well-tolerated, there is a potential for it to worsen liver problems in some individuals. It is important for individuals taking Lipitor to be aware of this potential risk and to discuss any concerns with their healthcare provider. Regular liver function tests may be recommended for those taking Lipitor, especially if they have a history of liver disease or heavy alcohol consumption.

Sources:
[1] Drug Patent Watch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Mayo Clinic. Statin side effects: Weigh the benefits and risks. Retrieved from https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] Drugwatch. Lipitor Side Effects. Retrieved from https://www.drugwatch.com/lipitor/side-effects/