Before taking both Lipitor (atorvastatin) and antihistamines, it is advisable to consult your doctor. Atorvastatin, the active ingredient in Lipitor, can interact with certain medications, including antihistamines. The NHS website recommends consulting a healthcare professional before combining atorvastatin with other medicines to ensure safety and effectiveness. Pfizer's labeling information for Lipitor also highlights the importance of discussing all medications, including antihistamines, with a healthcare provider to prevent potential drug interactions. Consulting your doctor will help determine the best course of action and ensure that your treatment plan is safe and tailored to your specific needs.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/
[3] https://labeling.pfizer.com/ShowLabeling.aspx?id=16892&Section=PPI