See the DrugPatentWatch profile for lipitor

Based on the information available, there is no definitive evidence to suggest that Lipitor (atorvastatin) commonly causes muscle fatigue. Lipitor is a statin medication used to treat high cholesterol levels, and while it can have side effects, muscle fatigue is not listed as a common side effect in the official Lipitor prescribing information [1]. However, some people may experience muscle-related side effects while taking Lipitor or other statins, but these are usually mild and do not cause significant muscle fatigue [1]. If you are experiencing muscle fatigue or other unusual symptoms while taking Lipitor, it is important to consult with your healthcare provider [1].

Sources:
[1] <https://www.drugpatentwatch.com/brands/lipitor/>