A Randomized, Double-blind, Placebo-controlled, Multicenter and Phase Ⅱa Clinical Trial for the Effectiveness and Safety of Baicalein Tablets in the Treatment of Improve Other Aspects of Healthy Adult With Influenza Fever

• 1.Meet the diagnostic criteria for influenza（non-severe）; 2.Fever to take medicine for the first time, The patient's maximum temperature (axillary temperature) is over 38℃; 3.The rapid virus antigen test of nasal swab was positive; 4.Course of disease ≤ 24 hours(The definition of course of disease is the time from fever to take investigational product for the first time); 5.Aged 18 to 65 years old(include 18 and 65), all genders; 6.Sign the informed consent form.

Exclusion Criteria:

• 1.The patients with severe influenza or complication (e.g. secondary bacterial pneumonia, pneumonia caused by other pathogens or other viral pneumonia); 2.The patients with other acute upper respiratory tract infection (e.g. acute pharyngitis, tonsillitis, rhinitis and nasosinuitis); 3.Allergic to baicalin and its analogue, Paracetamol tablets, or allergic people; 4.Patients with any of the following risk factors:

  1. Residents living in long-term care facilities (e.g. welfare house, sanatorium);
  2. Combined with chronic respiratory diseases (e.g. bronchial asthma, chronic obstrctive palmonary diseases);
  3. Combined with chronic cardiovascular disease (e.g. congenital heart disease, congestive heart failure, or coronary artery disease, but doesnt include hypertension without any other cardio-related symptoms);
  4. Combined with hematological system diseases (e.g. chronic myelogenous leukemia, lymphocytic leukemia, myelodysplastic syndrome, aplastic anemia);
  5. Neurodevelopmental disorders, include cerebrum, spinal cord, Peripheral nerve and muscle disorders (e.g. cerebral palsy, epilepsy[epileptic seizure disorder], stroke, dysgnosia, Moderate to severe dysplasia, myodystrophy, or spinal cord injury);
  6. Poor control of chronic metabolic and endocrine diseases;
  7. Immunosuppression (long-term use of immunosuppressant, immunocom promise caused by infection by HIV or malignant tumour);
  8. Obese people[BMI>30, BMI=Weight(kg)/Height(m2)] 5.Long-term take aspirin under 19 years old; 6.White blood cell count>11.0×109/L, or the proportion of neutrophils >80%, or need systemic antibacterial therapy; 7.24 hours before the visit, the patients have received antiviral treatment for influenza; 8.The patients have received Influenza vaccine or research monoclonal antibody in a year; 9.ALT and AST is equal or greater than 1.5 times of upper limit of normal, Scr is greater than upper limit of normal; 10.Suspected or really have a history of alcohol or drug abuse; 11.Gestation (have a positive pregnancy test), lactating women, or have a family planning within the next 6 months; 12.The patients have participated in other clinical trials within 3 months; 13.The investigator considers it inappropriate to participate in this clinical trial.