Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the provided sources, there are no known interactions between Lipitor and allergy medications. However, it is important to consult with a healthcare provider before taking any new medications, including allergy medications, while on Lipitor.

DrugPatentWatch [1] provides information on the patent status of Lipitor, but does not provide any information on drug interactions.

WebMD [2] provides detailed information on Lipitor, including its uses, dosage, side effects, and precautions. The website mentions that there are no known interactions between Lipitor and allergy medications. However, it is important to inform the healthcare provider about all the medications, vitamins, and supplements being taken before starting Lipitor.

The COVID-19 Treatment Guidelines [3] mention the drug-drug interactions of Paxlovid (nirmatrelvir and ritonavir) with other medications, but there is no mention of any interaction with Lipitor or allergy medications.

In conclusion, based on the provided sources, there are no known interactions between Lipitor and allergy medications. However, it is important to consult with a healthcare provider before taking any new medications while on Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details
[3] https://www.covid19treatmentguidelines.nih.gov/therapies/antivirals-including-antibody-products/ritonavir-boosted-nirmatrelvir--paxlovid-/paxlovid-drug-drug-interactions/