Lipitor is a medication used to lower cholesterol levels in the body, specifically low-density lipoprotein (LDL) cholesterol. The drug's active ingredient is atorvastatin calcium, which works by inhibiting an enzyme in the liver that produces cholesterol. There are no known restrictions on nut types when taking Lipitor. However, it is important to maintain a healthy diet while taking Lipitor to ensure the medication's effectiveness.

According to a study published in the Journal of Clinical Lipidology [2], a healthy diet that includes nuts can help lower cholesterol levels. Nuts contain healthy fats, fiber, and other nutrients that can help improve cholesterol levels. However, it is important to consume nuts in moderation, as they are also high in calories.

It is important to note that Lipitor can interact with certain foods and supplements. Grapefruit and grapefruit juice should be avoided while taking Lipitor, as they can increase the risk of side effects. Additionally, supplements such as red yeast rice and St. John's Wort can interact with Lipitor and should be avoided unless under the guidance of a healthcare provider [3].

In summary, there are no known restrictions on nut types when taking Lipitor. However, it is important to maintain a healthy diet while taking Lipitor to ensure the medication's effectiveness. Consuming nuts in moderation can be beneficial for cholesterol levels. It is important to avoid grapefruit and grapefruit juice while taking Lipitor and to consult with a healthcare provider before taking any supplements [2][3].

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5748761/
[3] https://www.everydayhealth.com/drugs/lipitor