The main hazards of painkillers are: First, eating too much will lead to damage to gastrointestinal function, there will be acute gastric ulcers, gastric bleeding and gastrointestinal reactions, abdominal pain, bloating, indigestion and other symptoms. Second, there will be kidney damage, such as renal insufficiency, renal papillary necrosis and other symptoms. Leukopenia and granulocyte deficiency. Liver damage, such as large liver, pain and discomfort in the liver area, and elevated transaminases. V. Some allergic reactions may occur, such as rash, drug fever, and asthma.