Tinidazole tablets belong to the nitroimidazole antibiotic class, and its common side effects include gastrointestinal symptoms, central nervous system symptoms, and allergy. 1. Gastrointestinal symptoms, such as metallic taste in the mouth, bitter taste in the mouth, nausea, anorexia, dyspepsia, epigastric discomfort, vomiting and constipation. 2. Central nervous system symptoms, such as weakness, fatigue, lethargy, vertigo and headache. 3. Allergy, a few patients can develop allergic symptoms after oral intake, such as skin itching, urticaria, rash, facial flushing, angioedema, oral dryness. 4. Others, palpitation, temporary decrease of leukocytes and neutrophils, candida infection, bronchospasm and so on. Tinidazole tablets are mainly used in the clinical treatment of trichomonas, anaerobic bacteria and other microbial infections, most of the side effects are relatively mild, need to be used under the guidance of a doctor, do not drink alcohol during the use of medication, early pregnancy and lactation is prohibited for women.