Lipitor is a brand name for the drug atorvastatin, which is used to lower cholesterol levels in the blood. According to Drug Patent Watch [1], the patent for Lipitor expired in 2011, and there are now generic versions of atorvastatin available. GoodRx [2] explains that pill splitting can be a way to save money on prescription drugs, but it is important to check with a doctor or pharmacist before doing so. However, Verywell Health [3] notes that not all medications can be safely split, and atorvastatin is one of them. The medication is designed to release slowly over time, and splitting the pill could affect the way it is absorbed by the body. Additionally, the pill has a coating that helps protect the stomach lining, and splitting it could expose the stomach to too much of the medication at once. In conclusion, it is not safe to split Lipitor pills. Patients who need to adjust their dosage should speak with their doctor or pharmacist to explore alternative options.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.goodrx.com/healthcare-access/medication-education/pill-splitting
[3] https://www.verywellhealth.com/can-cholesterol-lowering-drugs-be-split-in-half-698151