Lipitor and aspirin are two different drugs with different mechanisms of action and indications. Lipitor (atorvastatin) is a statin drug used to lower cholesterol levels in the blood, while aspirin is a nonsteroidal anti-inflammatory drug (NSAID) used to relieve pain, reduce inflammation, and prevent blood clots.

According to Drug Patent Watch [1], there is no known interaction between Lipitor and aspirin. However, it is always recommended to consult with a healthcare provider before taking any medication, especially if you have underlying medical conditions or are taking other medications.

A study published in Frontiers in Pharmacology [3] suggests that taking aspirin and statins together may have a beneficial effect on cardiovascular disease. The study found that aspirin and statins together reduced the risk of major adverse cardiovascular events, such as heart attack and stroke, in patients with a history of cardiovascular disease.

Another article from HealthCentral [2] recommends that people who take both Lipitor and aspirin should take them at different times of the day. Lipitor is typically taken at night, while aspirin is usually taken in the morning. This can help reduce the risk of gastrointestinal side effects that can occur when taking NSAIDs like aspirin.

In conclusion, there is no known interaction between Lipitor and aspirin, but it is always best to consult with a healthcare provider before taking any medication. Taking aspirin and statins together may have a beneficial effect on cardiovascular disease, but it is important to take them at different times of the day to reduce the risk of side effects.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/LIPITOR
[2] https://www.healthcentral.com/article/aspirin-lipitor-time
[3] https://www.frontiersin.org/articles/10.3389/fphar.2021.589418/full