Lipitor is a brand name for atorvastatin, which is a medication used to lower cholesterol levels in the blood. According to the sources provided, there is no information about any interactions between Lipitor and allergy medication. However, it is always recommended to consult with a healthcare provider before taking any new medications, including allergy medication, especially if you are already taking Lipitor.

Lipitor may cause side effects such as muscle pain, weakness, and tenderness [2]. If you experience any of these symptoms, it is important to talk to your healthcare provider before taking any other medications, including allergy medication.

It is also important to note that certain medications, including some allergy medications, may interact with Lipitor and increase the risk of side effects. For example, some antifungal medications, antibiotics, and HIV medications may interact with Lipitor [3]. Therefore, it is important to inform your healthcare provider of all the medications you are taking, including over-the-counter medications and supplements, to avoid any potential interactions.

In summary, there is no specific information about how long after taking Lipitor you can take allergy medication. However, it is always recommended to consult with a healthcare provider before taking any new medications, including allergy medication, especially if you are already taking Lipitor. It is also important to inform your healthcare provider of all the medications you are taking to avoid any potential interactions.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.medicalnewstoday.com/articles/drugs-lipitor-side-effects
[3] https://www.webmd.com/drugs/2/drug-3330/lipitor-oral/details