Lipitor is a medication that is used to lower cholesterol levels in the body. It is important to be aware of the potential interactions between Lipitor and certain foods. According to Healthgrades [3], people taking atorvastatin (the generic name for Lipitor) should avoid consuming grapefruit and grapefruit juice as it can increase the risk of side effects. Additionally, the article recommends avoiding high-fat foods, such as ice cream, as they can interfere with the absorption of the medication. Guthrie [2] confirms this recommendation, stating that high-fat foods can decrease the effectiveness of statins, including Lipitor. Drug Patent Watch [1] also notes that food can impact the absorption of atorvastatin, but does not specifically mention ice cream. In summary, while there is no specific mention of ice cream in the sources provided, it is recommended to avoid high-fat foods while taking Lipitor to ensure optimal absorption and effectiveness of the medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.guthrie.org/blog/dont-eat-these-foods-if-you-take-blood-thinners-or-statins
[3] https://www.healthgrades.com/right-care/cholesterol/what-foods-to-avoid-while-taking-atorvastatin