Lipitor (atorvastatin) and aspirin are commonly prescribed medications for different conditions. Lipitor is a statin used to lower cholesterol levels, while aspirin is often used as a blood thinner to prevent blood clots. While there isn't a direct negative interaction reported between Lipitor and aspirin, it is essential to consult with a healthcare provider before taking them together. Both medications can have side effects and potential interactions with other drugs, so it's crucial to ensure they are safe for you to use in combination. Your healthcare provider can provide personalized advice based on your medical history and current medications to help you make informed decisions about using Lipitor and aspirin together.

Sources:
[1] drugpatentwatch.com
[2] healthcentral.com
[3] jeccr.biomedcentral.com