Aspirin and Lipitor are two commonly prescribed medications that work differently in the body. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) that is used to relieve pain, reduce inflammation, and prevent blood clots. Lipitor, on the other hand, is a statin medication that is used to lower cholesterol levels in the blood.

There is no evidence to suggest that aspirin can interfere with the effectiveness of Lipitor [1]. In fact, some studies have shown that taking aspirin in combination with Lipitor may have additional health benefits. For example, a study published in the Journal of Experimental & Clinical Cancer Research found that the combination of aspirin and Lipitor may have a synergistic effect in reducing the risk of certain types of cancer [2].

However, it is important to note that taking aspirin and Lipitor together may increase the risk of certain side effects, such as gastrointestinal bleeding [3]. Therefore, it is important to talk to your doctor before taking these medications together to ensure that the benefits outweigh the risks.

In conclusion, there is no evidence to suggest that aspirin can interfere with the effectiveness of Lipitor. However, taking these medications together may increase the risk of certain side effects, so it is important to talk to your doctor before taking them together.

Sources:
[1] https://www.drugpatentwatch.com/p/tradename/ASPIRIN
[2] https://jeccr.biomedcentral.com/articles/10.1186/s13046-016-0304-4
[3] https://www.healthcentral.com/article/aspirin-lipitor-time