See the DrugPatentWatch profile for lipitor

Based on the information available, joint pain is not explicitly listed as a common side effect of Lipitor (atorvastatin), a cholesterol-lowering medication. However, some people taking Lipitor may experience muscle pain, which can sometimes be mistaken for joint pain [1].

According to the official Lipitor website, the most common side effects of Lipitor are diarrhea, upset stomach, and muscle pain [1]. The U.S. National Library of Medicine's MedlinePlus also lists muscle and joint pain as possible side effects, but they are not identified as worsening over time [2].

It is important to note that individual experiences with medication can vary, and some people may experience side effects not listed in official resources. If you are taking Lipitor and have noticed a worsening of joint pain, it is advisable to consult with your healthcare provider [3].

In rare cases, Lipitor has been associated with a condition called rhabdomyolysis, which can cause muscle breakdown and lead to kidney damage [1][2]. Joint pain is not a typical symptom of rhabdomyolysis, but muscle pain and weakness are [2].

In conclusion, while joint pain worsening is not a common side effect of Lipitor, it is always important to consult with a healthcare provider if you have concerns about medication side effects.

Sources:
[1] Lipitor (atorvastatin) tablets, for oral use: Pfizer Labs. <https://www.accessdata.fda.gov/drugsatfda_docs/label/2016/202677s038lbl.pdf>
[2] Atorvastatin: MedlinePlus. <https://medlineplus.gov/druginfo/meds/a601262.html>
[3] DrugPatentWatch: Lipitor (Atorvastatin) Drug Profile. <https://www.drugpatentwatch.com/drugs/lipitor>