Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood, while allergy medicine is used to treat symptoms of allergies. According to the sources provided, there is no specific information on the potential side effects of combining Lipitor and allergy medicine. However, it is important to note that mixing medications can sometimes lead to harmful interactions.

The National Institute on Alcohol Abuse and Alcoholism warns that mixing alcohol with medication can be dangerous and lead to harmful interactions. Additionally, the COVID-19 Treatment Guidelines recommend caution when taking Paxlovid (nirmatrelvir and ritonavir) with other medications, as it can lead to drug-drug interactions.

It is important to always consult with a healthcare provider before taking any new medications, including Lipitor and allergy medicine. They can provide guidance on potential interactions and side effects based on an individual's medical history and current medications.

Sources:
[1] Drug Patent Watch. Lipitor. https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] National Institute on Alcohol Abuse and Alcoholism. Harmful Interactions: Mixing Alcohol with Medicines. https://www.niaaa.nih.gov/publications/brochures-and-fact-sheets/harmful-interactions-mixing-alcohol-with-medicines
[3] COVID-19 Treatment Guidelines. Paxlovid Drug-Drug Interactions. https://www.covid19treatmentguidelines.nih.gov/therapies/antivirals-including-antibody-products/ritonavir-boosted-nirmatrelvir--paxlovid-/paxlovid-drug-drug-interactions/