None

None

- allergy to hydroxychloroquine or bromhexine - history of bone marrow transplant - known g6pd deficiency - chronic hemodialysis or glomerular filtration rate < 20ml/min - psoriasis - porphyria - concomitant use of digitalis, flecainide, amiodarone, procainamide, or propafenone - known history of long qt syndrome - current known qtc>500 msec - pregnant or nursing - severe liver disease - seizure disorder

- allergy to hydroxychloroquine or bromhexine - history of bone marrow transplant - known g6pd deficiency - chronic hemodialysis or glomerular filtration rate < 20ml/min - psoriasis - porphyria - concomitant use of digitalis, flecainide, amiodarone, procainamide, or propafenone - known history of long qt syndrome - current known qtc>500 msec - pregnant or nursing - severe liver disease - seizure disorder