Based on the available information, there is no direct correlation or evidence suggesting that Lipitor, a medication commonly used to treat high cholesterol, has an impact on pain medication dosage. Lipitor, also known as atorvastatin, is a type of statin that works by reducing the amount of cholesterol produced by the body [1][3].

The Mayo Clinic provides information on Lipitor's side effects, which include muscle pain, but there is no mention of any interaction with pain medication dosages [2]. Similarly, Medical News Today's article on Lipitor discusses its uses, side effects, and warnings, but there is no information regarding pain medication dosages [3].

However, it is important to note that all medications can interact with each other, and it's crucial to inform healthcare providers about all medications being taken [1]. Therefore, if you are taking pain medication and are prescribed Lipitor, it is essential to discuss this with your healthcare provider to ensure safety and effectiveness of both medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003?p=1
[3] https://www.medicalnewstoday.com/articles/atorvastatin-oral-tablet