Lipitor is a brand name for the drug atorvastatin, which is a medication used to lower cholesterol levels in the blood. While there is no direct evidence to suggest that Lipitor negatively affects athletic performance, it is important to understand the potential side effects of the medication.

According to the Drug Patent Watch [1], the most common side effects of Lipitor include muscle and joint pain, diarrhea, and indigestion. These side effects may affect athletic performance if they cause discomfort or pain during exercise. However, it is important to note that not all individuals who take Lipitor will experience these side effects.

A study published in the National Center for Biotechnology Information [2] found that atorvastatin did not have a significant effect on muscle strength or endurance in healthy individuals. However, the study did note that muscle pain and weakness were reported in some patients taking the medication.

Another study published in PubMed [3] found that atorvastatin did not affect aerobic performance in trained athletes. The study also noted that the medication did not have a significant effect on muscle strength or body composition.

In conclusion, while there is no direct evidence to suggest that Lipitor negatively affects athletic performance, it is important to understand the potential side effects of the medication. It is recommended that individuals who experience muscle or joint pain while taking Lipitor consult with their healthcare provider to determine the best course of action.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4679305/
[3] https://pubmed.ncbi.nlm.nih.gov/28807461/