According to the sources provided, there is no known negative interaction between Lipitor and vitamin C. However, it is important to note that there are certain drugs that should be avoided when taking statins, such as some antibiotics and antifungal medications [2]. It is always recommended to consult with a healthcare professional before taking any new medications or supplements, as they can provide personalized advice based on individual health conditions and other medications being taken. Additionally, it is important to avoid consuming grapefruit or grapefruit juice when taking Lipitor, as it can increase the risk of side effects [3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/
[3] https://www.fda.gov/consumers/consumer-updates/grapefruit-juice-and-some-drugs-dont-mix