Aspirin and Lipitor are commonly prescribed medications used to treat different medical conditions. Aspirin is a nonsteroidal anti-inflammatory drug (NSAID) that is often used to relieve pain, reduce inflammation, and prevent blood clots. Lipitor, on the other hand, is a statin medication used to lower cholesterol levels and reduce the risk of heart disease.

According to the sources provided, there are some potential stomach issues associated with aspirin use. Aspirin can cause irritation and inflammation of the stomach lining, which can lead to gastrointestinal (GI) bleeding, ulcers, and other digestive problems. The risk of stomach issues is higher in people who take aspirin regularly or at high doses [2].

Lipitor, on the other hand, is generally well-tolerated, but it can cause some gastrointestinal side effects, such as nausea, diarrhea, and abdominal pain. These side effects are usually mild and go away on their own [3].

It is important to note that both aspirin and Lipitor can interact with other medications and medical conditions, which can increase the risk of stomach issues and other side effects. Therefore, it is important to talk to your doctor before taking any new medication, especially if you have a history of stomach problems or are taking other medications that can interact with aspirin or Lipitor [2, 3].

In conclusion, while both aspirin and Lipitor are generally safe and effective medications, they can cause some stomach issues in certain individuals. It is important to talk to your doctor before taking these medications to discuss the potential risks and benefits and to ensure that they are safe and appropriate for you.

Sources:
[2] https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4305860/
[3] https://www.ahajournals.org/doi/10.1161/CIRCULATIONAHA.117.028321