According to the sources provided, there is no direct interaction between Lipitor and milk. Lipitor's active ingredient, atorvastatin, is not known to interact with dairy products like milk [1]. However, it is important to note that certain food and drink interactions can affect the absorption and effectiveness of Lipitor. For example, grapefruit and grapefruit juice can increase the levels of atorvastatin in the blood, leading to a higher risk of side effects [3]. Additionally, high-fat meals can reduce the absorption of atorvastatin, so it is recommended to take Lipitor on an empty stomach or with a low-fat meal [3].

The sources do not mention any interaction between Lipitor and milk thistle [2]. However, it is always important to inform your healthcare provider about any medications or supplements you are taking, including milk thistle, to avoid any potential interactions.

In summary, there is no direct interaction between Lipitor and milk, but certain food and drink interactions can affect its absorption and effectiveness. It is recommended to take Lipitor on an empty stomach or with a low-fat meal and to avoid grapefruit and grapefruit juice. As with any medication, it is important to inform your healthcare provider about any other medications or supplements you are taking.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.drugs.com/drug-interactions/lipitor-with-milk-thistle-276-128-1633-0.html
[3] https://www.uspharmacist.com/article/fooddrug-interactions