There is no evidence of a negative interaction between Lipitor and allergy shots. Lipitor is a medication used to lower cholesterol levels in the blood, while allergy shots are a form of immunotherapy used to treat allergies. According to Drug Patent Watch [1], there are no known drug interactions between Lipitor and allergy shots.

A recent study published in the Journal of Allergy and Clinical Immunology [2] examined the safety of administering immunotherapy to patients taking statins, such as Lipitor. The study found that there was no increased risk of adverse reactions or side effects when immunotherapy was given to patients taking statins. The study concluded that "statin use does not appear to increase the risk of systemic reactions to allergen immunotherapy."

Another study published in the Journal of Asthma and Allergy [3] also found no significant interactions between statins and immunotherapy. The study concluded that "statin use does not appear to be a significant risk factor for systemic reactions to immunotherapy."

In summary, there is no evidence to suggest that Lipitor and allergy shots cannot be taken together. Patients should always consult with their healthcare provider before starting any new medication or treatment, including immunotherapy and Lipitor.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/33788420/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8388159/