Acetylsalicylic acid is a white crystalline or crystalline powder with a slight smell of acetic acid. The name of its drug must be familiar to everyone, which is aspirin.
In the past, willow bark was used to relieve pain and fever, but in the 18th century, researchers succeeded in extracting salicylic acid from willow bark, which was effective but very irritating to the throat and stomach. In 1897, the German chemist Felix Hoffmann discovered that adding an acetyl functional group to the salicylic acid molecule can obtain a substance that is less irritating but can maintain the effect. After nearly 100 years of clinical application, acetylsalicylic acid has been proved to be effective in relieving mild or moderate pain, such as toothache, headache, neuralgia, muscle aches and dysmenorrhea, and is also used for feverish diseases such as colds and flu, **rheumatic pain, etc.
In recent years, it has also been found that aspirin has the effect of inhibiting platelet aggregation and preventing the formation of blood clots, but this also means that it can also affect the normal blood clotting function of the human body. Therefore, patients with gastric ulcers and other diseases should be cautious if they have gastric bleeding at the same time;Patients who need tooth extraction or surgery should also follow their doctor's advice to stop aspirin early to avoid an increased risk of bleeding.