Lipitor is a medication that belongs to the class of drugs known as statins. It is commonly used to treat high cholesterol levels and reduce the risk of heart disease. Lipitor works by inhibiting an enzyme in the liver that is responsible for producing cholesterol [1].

Regarding the effect of Lipitor on weightlifting, there is limited research available. One study published in the Journal of Clinical Lipidology investigated the effects of statins on muscle strength and exercise performance in older adults. The study found that statin use did not significantly affect muscle strength or exercise performance in this population [2].

Another study published in the Journal of Clinical Endocrinology and Metabolism examined the effect of statins on muscle function in healthy individuals. The study found that short-term statin use did not significantly affect muscle strength or function in this population [3].

Overall, the available research suggests that Lipitor and other statins do not have a significant impact on weightlifting or exercise performance. However, it is important to note that individual responses to medication can vary, and anyone who is taking Lipitor or any other medication should consult with their healthcare provider before starting a new exercise program or making any changes to their current routine.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://pubmed.ncbi.nlm.nih.gov/28807461/
[3] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3463373/