Physician makes a decision that trial involvement is not in patients' best interest, or any condition that does not allow the protocol to be followed safely Severe liver disease (e.g. Child Pugh score ≥ C, AST>5 times upper limit) Pregnant or breastfeeding, or positive pregnancy test Patients with known severe renal impairment (estimated glomerular filtration rate ≤30 mL/min/1.73 m2) or receiving continuous renal replacement therapy, hemodialysis, peritoneal dialysis Will be transferred to another hospital which is not the study site within 72 hours Receipt of any experimental treatment for 2019-nCoV (off-label, or trial related) within the 30 days prior to the time of the screening evaluation Allergic to the Bromhexine

Physician makes a decision that trial involvement is not in patients' best interest, or any condition that does not allow the protocol to be followed safely Severe liver disease (e.g. Child Pugh score ≥ C, AST>5 times upper limit) Pregnant or breastfeeding, or positive pregnancy test Patients with known severe renal impairment (estimated glomerular filtration rate ≤30 mL/min/1.73 m2) or receiving continuous renal replacement therapy, hemodialysis, peritoneal dialysis Will be transferred to another hospital which is not the study site within 72 hours Receipt of any experimental treatment for 2019-nCoV (off-label, or trial related) within the 30 days prior to the time of the screening evaluation Allergic to the Bromhexine