There are two main pharmacological effects of aspirin. The first one, is antipyretic, analgesic and anti-inflammatory, mainly used in febrile diseases, especially rheumatic fever, where the drug of choice is aspirin. The second, anti-platelet aggregation, is mainly applied to the treatment and prevention of ischemic cardiovascular and cerebrovascular diseases, such as coronary heart disease, myocardial infarction, cerebral infarction, cerebral atherosclerosis, etc. In addition, some studies in recent years have found that aspirin is also useful in the prevention of colon cancer. It should be noted that large amounts or long-term use of aspirin may have certain side effects, such as common irritation to the stomach, inducing peptic ulcers, gastrointestinal bleeding, and even perforation of the digestive tract. Because of its inhibitory effect on blood clotting, nosebleeds and dental bleeding may occur, as well as blood in the urine and bleeding of the skin mucosa. If these side effects occur, stop the drug immediately and visit your doctor.