Lipitor is a commonly prescribed medication for the treatment of high cholesterol levels. According to Drug Patent Watch [1], Lipitor's active ingredient is atorvastatin calcium. The drug works by inhibiting an enzyme in the liver that produces cholesterol, thereby reducing the amount of cholesterol in the bloodstream. However, like any medication, Lipitor has potential side effects.

One study published in the journal PLoS One [2] investigated the effects of atorvastatin on cognitive function and found that there was no significant difference in cognitive performance between the atorvastatin group and the placebo group. The study concluded that atorvastatin did not have any significant negative impact on cognitive function.

Another study published in the Journal of Clinical Psychopharmacology [3] investigated the effects of atorvastatin on mood and found that there was no significant difference in mood between the atorvastatin group and the placebo group. The study concluded that atorvastatin did not have any significant negative impact on mood.

In summary, based on the provided sources, there is no evidence to suggest that Lipitor has any negative performance-related side effects, such as negative impacts on cognitive function or mood. However, it is important to note that every individual may react differently to medication, and it is always important to consult with a healthcare professional before starting any new medication.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6047411/
[3] https://pubmed.ncbi.nlm.nih.gov/22288788/