Lipitor is a brand name for atorvastatin, a medication used to lower cholesterol levels. According to the Mayo Clinic [2], some common side effects of atorvastatin include muscle pain, weakness, and tenderness. Joint supplements, on the other hand, are taken to support joint health and reduce inflammation.

While there is no direct evidence to suggest that atorvastatin affects the effectiveness of joint supplements, it is important to note that the medication may cause muscle-related side effects that could impact joint health. Additionally, the NHS [3] advises patients taking atorvastatin to avoid taking certain supplements, such as St. John's Wort and red yeast rice, as they may increase the risk of side effects.

Overall, it is important for patients taking atorvastatin to discuss any supplements they are taking with their healthcare provider to ensure that they are safe and effective to take together.

Sources:
[2] https://www.mayoclinic.org/diseases-conditions/high-blood-cholesterol/in-depth/statin-side-effects/art-20046013
[3] https://www.nhs.uk/medicines/atorvastatin/taking-atorvastatin-with-other-medicines-and-herbal-supplements/