According to the sources provided, there may be potential interactions between Lipitor (atorvastatin) and glucosamine. The website Drugs.com lists glucosamine as a supplement that may interact with amlodipine-atorvastatin, the generic name for Lipitor [2]. The website ConsumerLab.com also warns that glucosamine may increase the risk of muscle pain and weakness when taken with statins like Lipitor [3]. However, the website DrugPatentWatch does not mention any interactions between Lipitor and glucosamine [1].

It is important to note that while some sources may suggest potential interactions between drugs and supplements, it is always best to consult with a healthcare professional before starting any new medications or supplements. Healthcare professionals can provide personalized advice based on an individual's medical history, current medications, and other factors.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/drug-interactions/amlodipine-atorvastatin-with-glucosamine-chondroitin-with-msm-173-0-655-14129.html
[3] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/