High-dose melatonin (10-20mg four times daily) in a case series of 10 COVID pneumonia patients was associated with a 5-day shorter duration of illness and no mechanical ventilation or deaths.

“they gave these people high-dose melatonin four times a day essentially 10 to 20 milligrams of melatonin four times a day and you know essentially the duration of cobit was five days less compared to similar covalent patients being hospitalized at the same time none of them required mechanical ventilation or died”