According to the sources provided, there are no specific antihistamines to avoid when taking Lipitor (atorvastatin). However, it is always important to consult with a healthcare provider or pharmacist before taking any new medications or supplements, as there may be potential interactions.

The first source, Drug Patent Watch [1], provides information on the patent status of Lipitor but does not mention any specific antihistamines to avoid when taking this medication.

The second source, GoodRx [2], provides information on drug interactions with Paxlovid, a medication used to treat COVID-19. While Lipitor is not mentioned specifically, the article states that antihistamines may interact with Paxlovid and recommends caution when taking these medications together. However, it is important to note that this information is specific to Paxlovid and may not necessarily apply to Lipitor.

The third source, NHS [3], provides general information on taking atorvastatin (Lipitor) with other medications and supplements. While it does not mention any specific antihistamines to avoid, it does caution against taking certain medications that may interact with Lipitor, such as antibiotics and antifungal medications.

In conclusion, there are no specific antihistamines to avoid when taking Lipitor, according to the sources provided. However, it is always important to consult with a healthcare provider or pharmacist before taking any new medications or supplements to ensure there are no potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/paxlovid/drug-interactions
[3] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/