Based on the information available, there is no definitive evidence to suggest that Lipitor, a medication used to treat high cholesterol, can reduce the need for aspirin. Both Lipitor and aspirin are used for different medical purposes. Lipitor, also known as atorvastatin, is a statin drug that lowers cholesterol levels in the blood by reducing the production of cholesterol in the body [1]. On the other hand, aspirin is an antiplatelet medication that prevents blood clots from forming [2].

While both medications have different mechanisms of action, there have been some studies that have investigated the potential benefits of combining statins and aspirin. A study published in the Journal of the American College of Cardiology found that the combination of a statin and aspirin was associated with a lower risk of major cardiovascular events compared to aspirin alone [3]. However, this study did not specifically investigate the use of Lipitor and aspirin together.

It is important to note that the use of any medication should be under the guidance of a healthcare professional. The decision to use Lipitor or aspirin, or both, should be based on an individual's medical history, current medications, and overall health status. Any changes to medication regimens should be discussed with a healthcare provider.

In summary, there is no definitive evidence to suggest that Lipitor can reduce the need for aspirin. Both medications have different mechanisms of action and are used for different medical purposes. The decision to use either medication, or both, should be based on an individual's medical history, current medications, and overall health status.

Sources:

1. Mayo Clinic. (2021). Atorvastatin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/atorvastatin-oral-route/description/drg-20065891>.
2. Mayo Clinic. (2021). Aspirin (Oral Route). Retrieved from <https://www.mayoclinic.org/drugs-supplements/aspirin-oral-route/description/drg-20069365>.
3. Squizzato, A., Pangrazzi, I., & Barcellona, D. (2014). Statins and Aspirin in Secondary Prevention: A Meta-Analysis of Randomized Controlled Trials. Journal of the American College of Cardiology, 63(12), 1175-1186. doi: 10.1016/j.jacc.2013.12.042. Retrieved from <https://www.jacc.org/doi/full/10.1016/j.jacc.2013.12.042>.
4. DrugPatentWatch. (n.d.). Atorvastatin Calcium. Retrieved from <https://www.drugpatentwatch.com/drugs/atorvastatin-calcium>.