Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. According to the sources provided, there are no known interactions between antihistamines and Lipitor. However, it is important to note that drug interactions can occur with any medication, and it is always recommended to consult with a healthcare provider before taking any new medications, including antihistamines.

The website DrugPatentWatch [1] provides information on the patent status of Lipitor, but does not offer any information on drug interactions with antihistamines. The website Drugs.com [2] offers a drug interaction checker, which allows users to check for potential interactions between medications, including Lipitor and antihistamines. However, the search results for Lipitor and antihistamines show no interactions.

Another source, Verywell Health [3], provides information on the side effects and drug interactions of statins, including Lipitor. The article states that there are no known interactions between Lipitor and antihistamines, but advises patients to inform their healthcare provider of all medications they are taking, including over-the-counter medications like antihistamines.

In conclusion, based on the sources provided, there are no known interactions between antihistamines and Lipitor. However, it is always recommended to consult with a healthcare provider before taking any new medications, including antihistamines, to ensure there are no potential interactions with Lipitor or any other medications being taken.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/drug-interactions/allergy-relief-tablets-with-atorvastatin-1486-14544-276-0.html
[3] https://www.verywellhealth.com/statin-side-effects-and-drug-interactions-698202