According to the sources provided, there is a possibility of interaction between Lipitor (atorvastatin) and glucosamine, and it is recommended to consult a healthcare professional before taking them together.

Lipitor is a medication used to lower cholesterol levels in the blood [1]. Glucosamine, on the other hand, is a dietary supplement that is commonly used for joint health [2].

According to Drugs.com [2], there is a moderate interaction between amlodipine-atorvastatin (Lipitor) and glucosamine-chondroitin with MSM. This interaction can increase the risk of side effects such as liver damage, so it is recommended to avoid taking them together.

The NHS [3] also recommends caution when taking atorvastatin with other medicines and herbal supplements, including glucosamine. They advise consulting a healthcare professional before taking any new supplements or medicines.

In summary, there is a possibility of interaction between Lipitor and glucosamine, and it is recommended to consult a healthcare professional before taking them together.

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.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/