Aspirin is a simple drug. it has many useful effects, it can stop a headache or an earache. It helps take away pain in the fingers or knees. Aspirin can stop a fever if you have the flu, and it can make you feel better if you have a cold. Some doctors believe that aspirin also can result in a healthy heart. They say that some people should take an aspirin every day. For those people, aspirin may stop heat disease.