Antihistamines are commonly used to treat allergies and are often taken alongside other medications. Lipitor, a brand name for the drug atorvastatin, is a medication used to lower cholesterol levels. It is important to know which antihistamines are safe to take with Lipitor to avoid any potential drug interactions.

According to DrugPatentWatch [1], there are no known drug interactions between Lipitor and antihistamines. However, it is always recommended to consult with a healthcare provider before taking any new medications, including antihistamines.

Drugs.com [2] lists several antihistamines that are considered safe to take with Lipitor, including cetirizine, loratadine, and fexofenadine. However, it is important to note that some antihistamines, such as diphenhydramine, can cause drowsiness and may interact with Lipitor. It is recommended to avoid taking these types of antihistamines with Lipitor.

A study published in the Journal of Clinical Pharmacology [3] found that there were no significant drug interactions between Lipitor and loratadine or cetirizine. However, the study did note that there may be a slight increase in the risk of muscle pain or weakness when taking Lipitor with some antihistamines, such as chlorpheniramine or diphenhydramine.

In summary, while there are no known drug interactions between Lipitor and antihistamines, it is important to consult with a healthcare provider before taking any new medications. Some antihistamines, such as cetirizine, loratadine, and fexofenadine, are considered safe to take with Lipitor, while others, such as diphenhydramine, may interact with Lipitor and should be avoided.

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://pubmed.ncbi.nlm.nih.gov/22947909/