Metronidazole tablets can relieve some types of toothache, but cannot cure it. 1. The oral cavity is a complex environment where many kinds of bacteria coexist, in which aerobic and anaerobic bacteria coexist, and under normal circumstances, various bacteria are in ecological balance with each other. 2. The initiating factor of most diseases in the oral cavity is bacteria, and in the advanced stage of some diseases, anaerobic bacteria will proliferate, and metronidazole can treat anaerobic bacterial infections, so it has a relieving effect on some types of toothache, such as wisdom tooth pericoronitis, periodontitis, etc., but it does not have an effect on all kinds of toothache, such as acute endodontic infection. 3. It should be raised that alcohol should not be consumed during the taking of metronidazole, and there are common gastrointestinal adverse reactions such as nausea and vomiting, and neurological adverse reactions such as dizziness, and it is recommended to take it after meals. In addition, it is recommended that patients with toothache go to the stomatology department of the regular hospital in time, under the guidance of the physician’s medication or treatment, so as not to delay the condition.