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Tiredness is not explicitly listed as a common side effect of Lipitor (atorvastatin) on the official product information provided by the drug's manufacturer, Pfizer [1]. However, it is important to note that individual experiences with medication can vary, and some users of Lipitor may experience fatigue or tiredness as a side effect.

The official Pfizer patient information leaflet for Lipitor lists possible side effects as including headache, nausea, diarrhea, and muscle and joint pain [1]. More serious side effects, which are less common, include memory loss, confusion, and muscle weakness [1].

If a patient experiences tiredness or any other unusual symptoms while taking Lipitor, they should consult their healthcare provider. It is also important to note that Lipitor can interact with other medications, and patients should inform their healthcare provider of all medications they are taking [1].

In some cases, tiredness may be a symptom of an underlying medical condition, and patients should consult their healthcare provider to determine the cause of their symptoms [2].

Sources:

[1] Pfizer. (n.d.). Lipitor (Atorvastatin Calcium) Tablets, for Oral Use. In DailyMed - FDA Labels and Important Safety Information [Internet]. Retrieved from <https://dailymed.nlm.nih.gov/dailymed/fda/fdaDrugXsl.cfm?setid=5b1d3e1e-8e3e-424e-a38e-8a329a2a33f0&type=display>

[2] Mayo Clinic. (2021, February 12). Fatigue: Why am I so tired and what can I do about it? In Mayo Clinic [Internet]. Retrieved from <https://www.mayoclinic.org/symptoms/fatigue/basics/causes/sym-20050895>