Lipitor (atorvastatin) is a medication used to lower cholesterol levels and reduce the risk of heart disease [1]. Glucosamine is a supplement commonly used for joint health [2]. According to ConsumerLab, there are no known interactions between Lipitor and glucosamine [3]. However, it is important to note that taking Lipitor long-term can cause insomnia as a side effect [2]. Therefore, if you experience insomnia while taking Lipitor, it may be beneficial to speak with your healthcare provider about adjusting your medication regimen. Additionally, it is always important to consult with a healthcare provider before starting any new medication or supplement, as they can provide personalized recommendations based on your individual health needs and medical history.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.aarp.org/health/drugs-supplements/info-04-2013/medications-that-can-cause-insomnia.html
[3] https://www.consumerlab.com/answers/which-drugs-should-be-avoided-when-taking-statins/statin-supplement-interactions/