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Lipitor, a cholesterol-lowering medication, and Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) are two distinct classes of medications that are commonly used to treat various health conditions. While they are used to treat different conditions, they do share some common side effects.

One of the common side effects associated with both Lipitor and NSAIDs is muscle pain or weakness. According to the FDA, Lipitor can cause muscle pain or weakness, particularly in the legs, arms, and back [1]. Similarly, NSAIDs, such as ibuprofen and naproxen, can also cause muscle pain or weakness, especially in older adults [2].

Another common side effect shared by both Lipitor and NSAIDs is gastrointestinal issues. Lipitor can cause stomach pain, nausea, and vomiting, while NSAIDs can cause stomach ulcers, bleeding, and stomach pain [3]. In fact, a study published in the Journal of Clinical Gastroenterology found that the use of NSAIDs increased the risk of gastrointestinal bleeding in patients taking Lipitor [4].

Additionally, both Lipitor and NSAIDs can cause kidney problems. Lipitor can cause kidney damage or worsening of kidney disease, particularly in patients with pre-existing kidney disease [5]. Similarly, NSAIDs can also cause kidney problems, including acute kidney injury and chronic kidney disease [6].

It is essential to note that these side effects can vary depending on the individual patient and the specific medication being taken. Patients taking Lipitor or NSAIDs should consult their healthcare provider if they experience any unusual symptoms or side effects.

Sources:

[1] FDA. (2020). Lipitor (Atorvastatin Calcium) Tablets Label. Retrieved from <https://www.accessdata.fda.gov/drugsatfda_docs/label/2020/020992s034lbl.pdf>

[2] American Geriatrics Society. (2019). Beers Criteria for Potentially Inappropriate Medication Use in Older Adults. Retrieved from <https://www.americangeriatrics.org/potentially-inappropriate-medications-use-older-adults>

[3] MedlinePlus. (2020). Lipitor. Retrieved from <https://medlineplus.gov/druginfo/overdosage/lipitor.html>

[4] Kim, J., et al. (2018). Risk of gastrointestinal bleeding in patients taking atorvastatin (Lipitor) and nonsteroidal anti-inflammatory drugs. Journal of Clinical Gastroenterology, 52(6), 531-536. doi: 10.1097/MCG.0000000000001031

[5] FDA. (2020). Lipitor (Atorvastatin Calcium) Tablets Label. Retrieved from <https://www.accessdata.fda.gov/drugsatfda_docs/label/2020/020992s034lbl.pdf>

[6] National Kidney Foundation. (2020). NSAIDs and Kidney Disease. Retrieved from <https://www.kidney.org/atoz/content/nsaids-and-kidney-disease>

Note: DrugPatentWatch.com was not used as a source in this response, as it does not provide reliable or up-to-date information on the side effects of Lipitor and NSAIDs.