See the DrugPatentWatch profile for lipitor

Based on the information available, there is no direct evidence to suggest that Lipitor (atorvastatin) worsens the side effects of antihistamines.

Lipitor is a statin medication used to treat high cholesterol levels, while antihistamines are used to treat allergies. Both of these types of medications have their own set of side effects.

According to the Lipitor Prescribing Information, the most common side effects of Lipitor include diarrhea, upset stomach, and muscle and joint pain [1]. On the other hand, common side effects of antihistamines include drowsiness, dry mouth, and dizziness [2].

There is no mention of any interaction between Lipitor and antihistamines in the Lipitor Prescribing Information or on DrugPatentWatch.com [1][3]. However, it is always important to consult with a healthcare provider or pharmacist before starting any new medication or combining medications, as individual responses can vary.

In summary, while there is no direct evidence to suggest that Lipitor worsens the side effects of antihistamines, it is always important to consult with a healthcare provider or pharmacist before starting any new medication or combining medications.

Sources:
[1] Lipitor Prescribing Information. Pfizer Labs. <https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/202080s035lbl.pdf>
[2] Antihistamines. Mayo Clinic. <https://www.mayoclinic.org/diseases-conditions/hay-fever/in-depth/antihistamines/art-20044129>
[3] DrugPatentWatch.com. <https://www.drugpatentwatch.com/>