According to the sources provided, there are no known interactions between Lipitor (atorvastatin) and allergy medications. However, it is important to note that Lipitor can interact with other medications. For example, the antiviral medication Paxlovid (ritonavir-boosted nirmatrelvir) can increase the levels of Lipitor in the body, which may increase the risk of side effects. Therefore, patients taking Lipitor should inform their healthcare provider of all medications they are taking, including over-the-counter medications and supplements, to avoid potential interactions.

Sources:
[1] Drug Patent Watch. (n.d.). Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] COVID-19 Treatment Guidelines. (2021). Paxlovid Drug-Drug Interactions. Retrieved from https://www.covid19treatmentguidelines.nih.gov/therapies/antivirals-including-antibody-products/ritonavir-boosted-nirmatrelvir--paxlovid-/paxlovid-drug-drug-interactions/
[3] WebMD. (2021). Lipitor Oral: Uses, Side Effects, Interactions, Pictures, Warnings & Dosing. Retrieved from https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details