The difference between artificial oxalic metronidazole and metronidazole is mainly different ingredients, different treatment symptoms, etc.. 1. Different ingredients: artificial oxalic metronidazole is a compound preparation, the main ingredients are metronidazole and artificial oxalic and other ingredients, metronidazole is a single preparation, is a single preparation of metronidazole. 2. Treatment symptoms: artificial oxalic metronidazole in addition to fighting anaerobic bacterial infections, but also has the role of clearing heat and detoxification, antipyretic and anti-inflammatory, mainly used for infections in the oral cavity, including periodontitis, apical periapical inflammation, wisdom tooth periapical inflammation and other oral inflammation. Metronidazole mainly fights anaerobic infections, in addition to oral infections, can also be used for trichomoniasis, amoebiasis and so on. 3. Adverse reactions: metronidazole can produce gastrointestinal reactions, such as loss of appetite, abdominal cramps, etc., neurological reactions, dizziness, headache, ataxia and so on. Artificial oxalic acid adverse reactions are not clear. Contraindications: Metronidazole is contraindicated in pregnant women, alcohol consumption is contraindicated, allergy is contraindicated, patients with active central nervous system diseases and blood disorders are contraindicated. Artificial oxalic acid is contraindicated in pregnant women. Precautions: Metronidazole adverse reactions should be discontinued, repeated use of drugs need to do a white blood cell count. Artificial oxalic metronidazole and metronidazole should be taken under the guidance of a doctor to avoid private medication.