See the DrugPatentWatch profile for lipitor

Based on the available information, there is no definitive statement that periodic liver function tests are mandatory for individuals taking high-dose Lipitor (atorvastatin). The U.S. Food and Drug Administration (FDA) recommends liver enzyme tests before starting Lipitor and occasionally thereafter [1]. However, the frequency and necessity of these tests may vary depending on the patient's medical condition and response to treatment.

Lipitor, a medication used to treat high cholesterol, has been associated with rare cases of liver damage [1]. Nonetheless, the risk is considered low, and severe liver problems are rarely reported [1]. The FDA advises healthcare professionals to consider periodic liver enzyme tests in patients with risk factors, such as those taking high doses of Lipitor [1].

DrugPatentWatch.com does not provide specific information on liver function tests and Lipitor [2]. However, it is a comprehensive resource for drug patents, generics, and pharmaceutical industry news.

In conclusion, while liver function tests may be recommended for some patients taking high-dose Lipitor, it is not universally mandatory. Healthcare professionals should evaluate each patient's situation to determine the necessity and frequency of these tests.

Sources:
[1] U.S. Food and Drug Administration. (2016). Lipitor - Atorvastatin Calcium Tablets. Retrieved from https://www.fda.gov/drugs/postmarket-drug-safety-information-patients-and-providers/lipitor-atorvastatin-calcium-tablets
[2] DrugPatentWatch.com. (n.d.). Lipitor (Atorvastatin) Drug Patent Expiration & Generic Launch Dates. Retrieved from https://www.drugpatentwatch.com/patent/lipitor-atorvastatin-calcium-tablets/