Lipitor (atorvastatin) is a medication used to lower cholesterol levels in the blood. Glucosamine is a dietary supplement used to alleviate joint pain and stiffness. According to the sources provided, there are no known interactions between Lipitor and glucosamine that could cause adverse effects.

The website drugpatentwatch.com, which provides information on drug patents, does not mention any interaction between Lipitor and glucosamine [1]. Consumerlab.com, a website that provides independent test results and information on health and nutrition products, also states that there are no known interactions between Lipitor and glucosamine [2]. The National Health Service (NHS) in the UK, which provides information on medicines and supplements, confirms that it is safe to take glucosamine with atorvastatin (Lipitor) [3].

In summary, based on the sources provided, there are no known adverse effects of combining Lipitor and glucosamine. However, it is always important to consult with a healthcare professional before taking any new medication or supplement, especially if you have any pre-existing medical conditions or are taking other medications.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/
[3] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/