Lipitor is a medication used to lower cholesterol levels in the blood, while allergy medications are used to treat allergic reactions. According to the sources provided, there is no direct evidence of harmful interactions between Lipitor and allergy medications. However, it is important to note that combining medications can lead to unpredictable side effects.

The National Institute on Alcohol Abuse and Alcoholism warns against mixing alcohol with medications, as this can lead to harmful interactions. While this source does not specifically mention Lipitor or allergy medications, it is important to be cautious when combining any medications.

BuzzRX, a healthcare blog, notes that Benadryl, an allergy medication, should not be combined with certain medications, such as those used to treat anxiety or depression. However, Lipitor is not mentioned as a medication that should not be combined with Benadryl.

It is important to consult with a healthcare provider before combining any medications, including Lipitor and allergy medications. They can provide personalized advice and monitor for any potential side effects.

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.buzzrx.com/blog/medications-that-should-never-be-combined-with-benadryl