Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood. According to the Drug Patent Watch [1], there is no known interaction between Lipitor and allergy medications. However, it is always important to consult with a healthcare provider before taking any new medications, including allergy medications, while on Lipitor.

The National Institute on Alcohol Abuse and Alcoholism [2] warns that alcohol can interact with many medications, including Lipitor. Alcohol can increase the risk of liver damage and muscle problems when taken with Lipitor. Therefore, it is recommended to avoid drinking alcohol while taking Lipitor.

A study published in the Journal of Clinical Lipidology [3] found that there is no significant interaction between Lipitor and cetirizine, which is an antihistamine commonly used to treat allergies. However, the study also noted that there may be individual variations in how medications interact with each other, so it is always important to consult with a healthcare provider before taking any new medications while on Lipitor.

In conclusion, there is no known interaction between Lipitor and allergy medications. However, it is important to consult with a healthcare provider before taking any new medications while on Lipitor. Additionally, it is recommended to avoid drinking alcohol while taking Lipitor to avoid potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.niaaa.nih.gov/publications/brochures-and-fact-sheets/harmful-interactions-mixing-alcohol-with-medicines
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7122736/