Metronidazole buccal tablets should be placed between the gums and gingivobuccal sulcus for oral ulcers adhered to the mucosal lesions, usually 1 tablet once, 3 times a day, after meals, before going to bed can be added 1 tablet. Metronidazole belongs to the anti-anaerobic drugs, anaerobic bacteria have a killing effect, and its buccal tablets are a special dosage form, which can be used in the treatment of gingivitis, periodontitis, pericoronitis and oral ulcers. Their use varies according to the disease being treated. In the treatment of gingivitis, periodontitis and pericoronitis, the tablets should be placed between the gums and the gingival and buccal grooves, so that the tablets are slowly dissolved and absorbed. In the treatment of mouth ulcers, the tablets can be adhered to the mucous membrane of the ulcers, so that the effect of the drug directly to the lesions, directly killing bacteria. In addition, the drug should not be swallowed, and alcohol should not be consumed during the medication to avoid affecting the efficacy of the drug. Its adverse reactions occasionally see dry mouth, mucosal irritation and other allergic reactions, long-term use can also cause taste changes, but generally can disappear after stopping the drug. Allergic to the product and the ingredients contained in the product, pregnancy, lactating women and active central nervous system disease is prohibited. When using Metronidazole Buccal Tablets, it should be used under medical supervision.