Lipitor is a brand name for atorvastatin, a medication that is used to lower cholesterol levels and reduce the risk of heart disease. While most people tolerate atorvastatin well, some individuals may experience allergic reactions to the medication.

Common symptoms of a Lipitor allergy may include hives, itching, rash, swelling of the face, lips, tongue, or throat, difficulty breathing, and dizziness. In rare cases, an allergic reaction to atorvastatin may cause a severe condition called anaphylaxis, which requires immediate medical attention.

It is important to note that allergic reactions to atorvastatin are rare, and most people who take the medication do not experience any adverse effects. However, if you are taking Lipitor and experience any of the symptoms listed above, you should stop taking the medication and seek medical attention right away.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.nhs.uk/medicines/atorvastatin/side-effects-of-atorvastatin/
[3] https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20067003