Based on the provided sources, there is no direct information about the compatibility of naproxen and Lipitor for simultaneous use. However, we can gather some insights based on the general interactions and side effects of these medications.

Naproxen is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, inflammation, and fever [1]. It works by reducing the production of certain chemicals in the body that cause pain and inflammation. On the other hand, Lipitor (atorvastatin) is a medication used to lower cholesterol levels and reduce the risk of heart-related conditions [2].

According to the Healthline article on Lipitor interactions [2], it is important to be cautious when taking Lipitor with other medications that may interact with it. While the article does not specifically mention naproxen, it does mention that certain NSAIDs, like ibuprofen and aspirin, can potentially increase the risk of muscle-related side effects when taken with Lipitor.

A study published in the National Center for Biotechnology Information (NCBI) suggests that NSAIDs, including naproxen, may interfere with the metabolism of statins, which are drugs that Lipitor belongs to [3]. This interference could potentially lead to an increased risk of muscle-related side effects, such as myopathy or rhabdomyolysis, which can be serious.

Given this information, it is advisable to consult with a healthcare professional or pharmacist to determine the compatibility and potential risks of using naproxen and Lipitor simultaneously. They can provide personalized advice based on your specific medical history and current medications.

In conclusion, while there is no direct information about the compatibility of naproxen and Lipitor for simultaneous use, it is important to be cautious due to the potential for interactions and increased risk of muscle-related side effects. Consulting a healthcare professional is recommended to ensure safe and appropriate use of these medications.

Sources:
[1] DrugPatentWatch: Naproxen. Retrieved from https://www.drugpatentwatch.com/p/tradename/NAPROXEN
[2] Healthline: Lipitor (Atorvastatin): Side Effects, Interactions, and More. Retrieved from https://www.healthline.com/health/drugs/lipitor-interactions
[3] NCBI: Drug-drug interaction between naproxen and atorvastatin in patients with hyperlipidemia. Retrieved from https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334287/