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Based on the information available, there is no general consensus that Lipitor dosage reduction is necessary for liver patients. However, it is crucial to note that each patient's situation may vary, and therefore, individual medical advice is essential.

Lipitor, also known as atorvastatin, is a medication used to treat high cholesterol levels. It works by reducing the production of cholesterol in the body, which can help prevent heart attacks and stroke. According to DrugPatentWatch.com, Lipitor is one of the most prescribed medications in the United States [1].

The U.S. Food and Drug Administration (FDA) has approved Lipitor for use in patients with liver disease, including those with moderate liver impairment [2]. However, the FDA recommends that patients with severe liver impairment should not use Lipitor [2].

While there is no specific mention of dosage reduction for liver patients, the FDA advises that Lipitor should be used with caution in patients with liver disease [2]. It is essential to monitor liver function tests before starting Lipitor therapy and periodically during treatment [2].

In summary, while there is no general requirement for Lipitor dosage reduction in liver patients, it is crucial to exercise caution when prescribing this medication to patients with liver disease. Medical professionals should monitor liver function tests regularly and adjust treatment accordingly based on individual patient needs.

Sources:

1. DrugPatentWatch.com. (n.d.). Atorvastatin (Lipitor) Patent Expiration & Generics. Retrieved from <https://www.drugpatentwatch.com/patent/atorvastatin-lipitor/>
2. U.S. Food and Drug Administration. (2016). Lipitor (atorvastatin calcium) tablets, for oral use. Retrieved from <https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/020990s053,021183s014,021200s013lbl.pdf>