Toothaches caused by oral infections, namely ulcerative gingivitis and odontogenic infections, can be treated with Metronidazole tablets. The exact dosage should be judged according to the patient’s age. children under 10 years old should take no more than 100mg per dose, 2~3 times a day, and adults should take 200mg per dose, 3 times a day. Metronidazole Tablets is the name of a western medicine, it is film-coated tablets, removing the coating to show white or off-white, and is indicated for the treatment and prevention of infections identified as or suspected to be caused by anaerobic bacteria. Metronidazole tablets have inhibitory activity against a wide range of pathogenic microorganisms, especially Anaplasma, Clostridium, Clostridium, Fungi, Digestive Cocci, Digestive Streptococci, Anaerobic Cocci and Gardnerella vaginalis. Therefore, Metronidazole Tablets are effective in treating toothache caused by oral infections. Note that taking metronidazole tablets may cause adverse reactions such as nausea, vomiting, loss of appetite in a small portion of the population, and rarely hives, rash, itching, flushing, and a metallic taste in the mouth, but it does not affect the efficacy of the drug, and can be restored by discontinuing the drug. It is contraindicated in patients with known hypersensitivity to nitroimidazole, metronidazole, or any of the excipient components; in patients with trichomoniasis, it is contraindicated in the first trimester of pregnancy; it is contraindicated in those with active central nervous system disorders and blood disorders; and it should not be taken by patients who have taken disulfiram within the last two weeks. It should also be noted that alcohol should not be consumed within three days of discontinuing metronidazole, and if you must take metronidazole tablets to relieve toothache, you should do so under the guidance of a doctor.