Lipitor is a medication used to lower cholesterol levels in the blood. The active ingredient in Lipitor is atorvastatin calcium. According to the sources provided, it is not recommended to crush or split Lipitor tablets. Lipitor is available in different strengths, and the tablets have a film coating that helps to protect the medication from being broken down too quickly in the body [1]. Crushing or splitting Lipitor tablets can damage the coating, which can cause the medication to be released too quickly or not work as intended [2]. Additionally, crushing or splitting Lipitor tablets can make it difficult to get an accurate dose, which can lead to ineffective treatment or adverse effects [3]. Therefore, it is important to follow the dosing instructions provided by a healthcare professional and not crush or split Lipitor tablets without their guidance.

Sources:
[1] DrugPatentWatch. Lipitor. Retrieved from https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Royal Pharmaceutical Society. Pharmaceutical Issues When Crushing, Opening or Splitting Oral Dosage Forms. Retrieved from https://www.rpharms.com/Portals/0/RPS%20document%20library/Open%20access/Support/toolkit/pharmaceuticalissuesdosageforms-%282%29.pdf
[3] SafeRx. Crushing Tablets & Drug Administration via Enteral Feeding Tubes. Retrieved from http://www.saferx.co.nz/Crushing-table-RAC.pdf