The exclusion criteria are: 1) Admitted to the intensive care unit at the time of screening; 2) Imminent initiation or treatment with invasive mechanical ventilation at the time of screening; 3) Imminent death according to the judgement of the most responsible physician; 4) Receiving palliative care; 5) Known history of severe liver or kidney dysfunction; 6) On treatment with Bromhexine hydrochloride at the time of screening; 7) Known allergy to bromhexine hydrochloride; 8) Pregnancy or breastfeeding (including baby to breast, bottle feeding mother's expressed breast milk); 9) Previous enrollment in this trial (Enrollment in another clinical trial does not preclude enrollment in this trial )

The exclusion criteria are: 1) Admitted to the intensive care unit at the time of screening; 2) Imminent initiation or treatment with invasive mechanical ventilation at the time of screening; 3) Imminent death according to the judgement of the most responsible physician; 4) Receiving palliative care; 5) Known history of severe liver or kidney dysfunction; 6) On treatment with Bromhexine hydrochloride at the time of screening; 7) Known allergy to bromhexine hydrochloride; 8) Pregnancy or breastfeeding (including baby to breast, bottle feeding mother's expressed breast milk); 9) Previous enrollment in this trial (Enrollment in another clinical trial does not preclude enrollment in this trial )