Lipitor is a brand name for the drug atorvastatin, which is a type of medication called a statin used to lower cholesterol levels in the blood [1]. According to Mayo Clinic, statins can cause side effects such as muscle pain, tenderness, or weakness, and it is recommended to talk to a doctor if any of these symptoms occur [2]. Additionally, GoodRx warns that grapefruit and grapefruit juice should be avoided while taking statins, as it can increase the risk of side effects [3].

However, there is no specific information provided by the sources on how long one should wait between taking Lipitor and pain medication. Therefore, it is recommended to consult a healthcare provider for guidance on the appropriate timing and dosage of medications to avoid any potential interactions or adverse effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.goodrx.com/classes/statins/why-cant-i-have-grapefruit-with-my-statin