See the DrugPatentWatch profile for lipitor

Based on the information available, it is not a typical side effect to experience muscle fatigue directly after starting Lipitor (atorvastatin). According to Drugs.com, the most common side effects of Lipitor include diarrhea, upset stomach, and muscle pain [1]. However, muscle-related side effects such as muscle weakness, cramps, or pain might occur at any time during Lipitor treatment, not only at the beginning [1].

It is important to note that muscle-related symptoms could indicate a rare but serious side effect called rhabdomyolysis, a condition that causes muscle damage and can lead to kidney failure [1]. If you experience severe muscle pain, tenderness, or weakness, especially if accompanied by fever or dark-colored urine, you should seek medical attention immediately [1].

Additionally, DrugPatentWatch.com provides information on the patent status and market exclusivity of drugs, which can be helpful for understanding the drug's availability and potential costs [2]. However, it does not contain specific information about Lipitor's side effects.

In summary, while muscle fatigue is not a typical side effect immediately after starting Lipitor, muscle-related symptoms can occur at any time during treatment. If you have concerns about side effects or any symptoms, consult your healthcare provider for advice.

Sources:
[1] Lipitor (atorvastatin) tablets, for oral use - drugs.com. Retrieved from <https://www.drugs.com/lipitor.html>
[2] Lipitor - DrugPatentWatch.com. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>