According to the sources provided, there is a potential drug interaction between muscle relaxants and Lipitor (atorvastatin). Specifically, the muscle relaxant chlorzoxazone may interact with Lipitor, potentially leading to an increased risk of side effects such as muscle pain and weakness [2]. However, it is important to note that not all muscle relaxants have been studied for interactions with Lipitor, and the potential for interactions may vary depending on the specific muscle relaxant being taken.

Additionally, it is important to consult with a healthcare provider before taking any new medications, including muscle relaxants and Lipitor. A healthcare provider can help determine whether a specific muscle relaxant is safe to take with Lipitor, or whether an alternative medication or treatment may be more appropriate. In some cases, it may be necessary to adjust the dosage of one or both medications in order to minimize the risk of interactions.

Overall, while there is a potential for drug interactions between muscle relaxants and Lipitor, the specific risk may vary depending on the type of muscle relaxant being taken. It is important to consult with a healthcare provider before taking any new medications, and to report any potential side effects or concerns promptly in order to ensure safe and effective treatment.

Sources:
[1] Drug Patent Watch. Lipitor. https://www.drugpatentwatch.com/p/tradename/LIPITOR. Accessed 15 Nov 2021.
[2] Drugs.com. Chlorzoxazone with Lipitor. https://www.drugs.com/drug-interactions/chlorzoxazone-with-lipitor-645-0-276-128.html. Accessed 15 Nov 2021.
[3] National Center for Biotechnology Information. Statin-Associated Muscle Symptoms: Impact on Statin Therapy-European Atherosclerosis Society Consensus Panel Statement on Assessment, Aetiology and Management. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3858697/. Accessed 15 Nov 2021.