Lipitor is a medication used to lower cholesterol levels in the blood. The drug works by blocking an enzyme that produces cholesterol in the liver [1]. There is no evidence that Lipitor users need to take vitamin supplements. However, some supplements may interact with statins, the class of drugs that includes Lipitor. For example, grapefruit juice can increase the level of statins in the blood, leading to a higher risk of side effects [2]. Other supplements, such as coenzyme Q10 (CoQ10), have been suggested to help reduce muscle pain associated with statin use, but there is no conclusive evidence to support this claim [3]. Therefore, it is recommended that Lipitor users consult with their healthcare provider before taking any vitamin supplements to avoid potential interactions or side effects.

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://newsnetwork.mayoclinic.org/discussion/mayo-clinic-q-and-a-statin-use-doesnt-always-mean-coenzyme-q10-supplement-is-needed/