Lipitor, also known by its generic name atorvastatin, is a medication commonly prescribed to lower cholesterol levels and reduce the risk of heart disease. While Lipitor is generally well-tolerated by most patients, there have been some reports and studies suggesting a potential link between Lipitor use and muscle strength.

One source that provides information on Lipitor is Drug Patent Watch [1]. However, it does not specifically mention the link between Lipitor and muscle strength. Instead, it focuses on the patent information and expiration dates of the drug.

A more relevant source is a study published in the Journal of Clinical Pharmacology [2]. This study examined the effects of atorvastatin (Lipitor) on muscle strength in older adults. The study found that atorvastatin use was associated with a decrease in muscle strength, particularly in the lower extremities. The authors concluded that atorvastatin may have a negative impact on muscle strength in older individuals.

Another study published in the journal Muscle & Nerve [3] investigated the effects of statin therapy, including atorvastatin, on muscle strength and function in patients with neuromuscular disorders. The study found that statin use was associated with a decline in muscle strength and function in these patients. However, it is important to note that this study focused on individuals with neuromuscular disorders and may not be directly applicable to the general population.

In summary, while Lipitor is generally well-tolerated, there is some evidence suggesting a potential link between Lipitor use and decreased muscle strength, particularly in older adults and individuals with neuromuscular disorders. It is important for patients taking Lipitor to be aware of this potential side effect and to discuss any concerns with their healthcare provider.

Sources:
[1] Drug Patent Watch: https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] Journal of Clinical Pharmacology: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2949584/
[3] Muscle & Nerve: https://pubmed.ncbi.nlm.nih.gov/17341246/