Metronidazole tablets and Sanshuang tablets can be used at the same time, it is recommended that the time interval between the medication is more than half an hour, so as not to affect the absorption of the drug and reduce the efficacy. Three yellow tablets have the effect of clearing heat and detoxification (removing heat and toxicity from the body), diarrhea and laxative. It is used for eye redness and swelling pain, mouth and nose sores, sore throat, gum swelling and pain, heartburn and thirst, yellow urine and constipation caused by triple jiao heat (chest and abdomen heat evil is heavier). Attention pregnant women, hemolytic anemia, glucose-6-phosphate dehydrogenase deficiency is prohibited. Sanhuang tablets and metronidazole tablets taken together may interact with each other, patients should choose the drug and dosage under the guidance of a physician, do not take medication without authorization to avoid adverse consequences.