See the DrugPatentWatch profile for lipitor

Based on the information available, there is no definitive evidence to suggest that muscle cramps occur frequently in individuals taking Lipitor (atorvastatin). Lipitor is a statin medication used to lower cholesterol levels, and while it can cause muscle-related side effects, these are typically mild and infrequent [1].

Muscle cramps are a common occurrence in the general population, and it is possible that some individuals taking Lipitor may experience muscle cramps. However, this does not necessarily mean that the medication is the cause. It is important to note that correlation does not imply causation.

The drug information provided by Lipitor's manufacturer, Pfizer, lists muscle pain and weakness as possible side effects, but does not specifically mention muscle cramps [2]. Similarly, the FDA's Adverse Event Reporting System (FAERS) does not indicate a high incidence of muscle cramps associated with Lipitor use [3].

In summary, while Lipitor can cause muscle-related side effects, there is no evidence to suggest that muscle cramps occur frequently in individuals taking this medication. If an individual experiences muscle cramps or other unusual symptoms while taking Lipitor, they should consult with their healthcare provider.

Sources:
[1] DrugPatentWatch.com. (n.d.). Lipitor (Atorvastatin) - DrugPatentWatch. Retrieved from <https://www.drugpatentwatch.com/drugs/lipitor>
[2] Pfizer. (n.d.). Lipitor® (atorvastatin calcium) tablets, for oral use. Full Prescribing Information. Retrieved from <https://www.pfizer.com/products/product-detail/lipitor>
[3] U.S. Food and Drug Administration. (n.d.). FDA Adverse Event Reporting System (FAERS) Public Dashboard. Retrieved from <https://www.fda.gov/drugs/questions-and-answers-fdas-adverse-event-reporting-system-faers/fda-adverse-event-reporting-system-faers-public-dashboard>