Lipitor, which is the brand name for atorvastatin, is a medication used to lower cholesterol levels in the body [1]. According to Drug Patent Watch, there is no known interaction between Lipitor and muscle relaxants [1]. However, it is important to note that some muscle relaxants, such as methocarbamol and cyclobenzaprine, can cause drowsiness and dizziness, which can be intensified when taken with other medications that have similar side effects [2][3]. Therefore, it is important to consult with a healthcare provider before taking Lipitor or any other medication in combination with muscle relaxants to avoid any potential adverse effects [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3560644/
[3] https://www.buzzrx.com/blog/muscle-relaxers-methocarbamol-vs-cyclobenzaprine