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Based on the information available, there is no definitive evidence that Lipitor directly causes leg weakness. Lipitor, also known as atorvastatin, is a statin medication used to lower cholesterol levels [1].

However, some users of Lipitor may experience muscle-related side effects, including muscle pain or weakness, often described as myalgia [2]. This symptom is typically mild, but in rare cases, it can progress to a more severe condition called rhabdomyolysis, which is characterized by muscle breakdown and can lead to kidney damage [2].

It is essential to note that leg weakness can be a symptom of various medical conditions, and it is not exclusively associated with Lipitor use. If you experience leg weakness or any other unusual symptoms while taking Lipitor, it is crucial to consult your healthcare provider for a proper evaluation [3].

In summary, Lipitor may cause muscle-related side effects, including mild muscle pain or weakness, but there is no direct evidence linking Lipitor to leg weakness. If you have concerns about your medication or symptoms, consult your healthcare provider for guidance.

Sources:
[1] "Atorvastatin (Oral Route) Description and Brand Names." Mayo Clinic, Mayo Foundation for Medical Education and Research, 11 Jan. 2022, www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/description/drg-20068925.
[2] "Atorvastatin (Oral Route) Side Effects." Mayo Clinic, Mayo Foundation for Medical Education and Research, 11 Jan. 2022, www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/side-effects/drg-20068925.
[3] "Muscle Pain and Statins - Statin Muscle Toxicity." DrugPatentWatch, 2022, www.drugpatentwatch.com/statin-muscle-toxicity.