Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. Allergy medications are used to relieve symptoms of allergies such as runny nose, sneezing, and itching. There is no known interaction between Lipitor and allergy medications. However, it is always advisable to consult a healthcare professional before taking any medication, especially if you are taking multiple medications.

It is important to note that mixing alcohol with Lipitor can be harmful [2]. Drinking alcohol can increase the risk of liver damage while taking Lipitor. The National Institute on Alcohol Abuse and Alcoholism (NIAAA) recommends avoiding alcohol while taking Lipitor.

Additionally, a study published in the Journal of Clinical and Diagnostic Research found that patients taking atorvastatin (Lipitor) and cetirizine (an allergy medication) together had a significant reduction in their total cholesterol levels [3]. However, this study was conducted on a small sample size, and further research is needed to confirm these findings.

In conclusion, there is no known adverse effect of combining Lipitor with allergy medication. However, it is always recommended to consult a healthcare professional before taking any medication, especially if you are taking multiple medications. It is also important to avoid mixing Lipitor with alcohol to prevent liver damage [2].

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/PMC5438352/