Inclusion criteria
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1) Clinically diagnosed with COVID-19 classificated according to the Diagnosis and Treatment Protocol for COVID-19 (Trial Version 9 formulated by the National Health Commission;
2) SARS-CoV-2 nucleic acid test is positive;
3) Age ≥18 years old;
4) Infected subjects with clinical symptoms (fever, cough, sore throat, fatigue, etc.) or abnormal of hematology;
5) Subjects fully understand and participate this trial voluntarily, and sign Informed Consent Form.
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Exclusion criteria:
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1) Subjects who have used drugs with pharmacological or clinical effects against novel coronavirus or traditional Chinese medicine containing similar ingredients to the study drug within 5 days prior to screening, including but not limited to Jinhua Qinggan, Lianhua Qingwen, Radix isatidis, Paxlovid, Azifudine, etc.;
2) Subjects receiving COVID-19 monoclonal antibodies, convalescent plasma, or other concomitant drugs within 28 days prior to screening;
3) Subjects who had SARS-CoV-2 vaccination within 28 days prior to screening or who planned to vaccinateSARS-CoV-2 during the visit and follow-up period;
4) Immunodeficient subjects (such as patients with malignant tumors, organ or bone marrow transplants, AIDS patients, long-term use of corticosteroids or other immunosuppressive drugs resulting in immune dysfunction);
5) Subjects with serious cardiovascular and cerebrovascular diseases, chronic pulmonary diseases (chronic obstructive pulmonary disease, moderate to severe asthma, interstitial pulmonary disease), inadequately controlleddiabetes, tumor and other underlying diseases;
6) Subjects who are allergic to the ingredients contained in the study drug, or subjects are in allergic constitution;
7) Medicalhistory of gastrointestinal diseases that affect drug absorption (including but not limited to reflux esophagitis, chronic diarrhea, inflammatory bowel disease, intestinal tuberculosis, gastrinoma, short bowel syndrome, post-subtotal gastrectomy, etc.);
8) Women in the lactation or pregnancy period;
9) Suspected or confirmed history of alcohol, drug abuse or mental illness;
10) Subjects who participated in other clinical trials of drugs within 1 month before screening;
11) Any other factor that the investigator considered unsuitable for participation.
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