Lipitor (atorvastatin) is a medication used to lower cholesterol levels, while antihistamines are commonly used to treat allergies. The question of whether there are any side effects of combining Lipitor and antihistamines has been raised.

According to the sources, there are no significant drug interactions between Lipitor and antihistamines. The Drug Patent Watch [1] website does not list any drug interactions between Lipitor and antihistamines. Additionally, the ABC News [2] article on living with heart disease does not mention any negative effects of combining Lipitor and antihistamines.

A study published in the National Center for Biotechnology Information [3] showed that the combination of atorvastatin (Lipitor) and loratadine (an antihistamine) did not result in any significant drug interactions or adverse effects. However, it is important to note that this study was conducted on a small sample size and focused on only one type of antihistamine.

In conclusion, based on the sources provided, there are no significant side effects or drug interactions between Lipitor and antihistamines. However, it is always important to consult with a healthcare provider before taking any new medications or combinations of medications to ensure safety and efficacy.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://abcnews.go.com/Health/HeartDiseaseLivingWith/story?id=4224807
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334287/