When patients take too much toothache medicine, it can cause some adverse reactions. The adverse reactions are mainly drug irritation of the gastrointestinal tract, or eczema, rash, liver function damage, kidney function damage and other problems. Toothache drugs are more damaging to liver function, which can cause abnormal liver function, and also cause other stimuli, which can have certain effects on the gastrointestinal tract, and may also produce certain adverse drug reactions, which need to take certain examinations and judgments in order to carry out symptomatic treatment and relieve tooth pain. Some dental pain can not be relieved by taking medicine, only symptomatic examination and exclusion can be carried out to effectively reduce the problems caused by irritating lesions, and symptomatic treatment of teeth is needed to reduce the intake of drugs and the generation of adverse reactions, which have a certain protective effect on the body, so it is a medicine with three toxins, and the side effects are in some cases relatively large.