inclusion criteria: * subjects aged ≥ 18 years. * infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) at least 3 days before randomization. * hospitalized or emergency patient in hospitalization phase. * mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)\> 94%. * less than 12 days from the onset of symptoms. * women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). * accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.

inclusion criteria: * subjects aged ≥ 18 years. * infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) at least 3 days before randomization. * hospitalized or emergency patient in hospitalization phase. * mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)\> 94%. * less than 12 days from the onset of symptoms. * women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). * accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.

inclusion criteria: - subjects aged ≥ 18 years. - infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) at least 3 days before randomization. - hospitalized or emergency patient in hospitalization phase. - mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)> 94%. - less than 12 days from the onset of symptoms. - women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). - accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.

inclusion criteria: - subjects aged ≥ 18 years. - infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) at least 3 days before randomization. - hospitalized or emergency patient in hospitalization phase. - mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)> 94%. - less than 12 days from the onset of symptoms. - women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). - accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.

inclusion criteria: - subjects aged ≥ 18 years. - infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) or by antigen test, in this case, at least in the first seven days after the onset of symptoms and in any case up to 3 days before randomization. - hospitalized or emergency patient in hospitalization phase. - mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)> 94%. - less than 12 days from the onset of symptoms. - women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). - accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.

inclusion criteria: - subjects aged ≥ 18 years. - infection confirmed by sars-cov-2 by polymerase chain reaction (pcr) or by antigen test, in this case, at least in the first seven days after the onset of symptoms and in any case up to 3 days before randomization. - hospitalized or emergency patient in hospitalization phase. - mild / moderate pneumonia, with fever, persistent cough and severe asthenia, confirmed by imaging tests (conventional radiology or computerized axial tomography (ct)) with ambient air oxygen saturation (sato2)> 94%. - less than 12 days from the onset of symptoms. - women of childbearing potential must have a negative serum or urine pregnancy test prior to inclusion in the study and must commit to using highly effective contraceptive methods (intrauterine device, bilateral tubal occlusion, vasectomized partner, and sexual abstinence). - accepts written consent or oral informed in the case that due to the relevant security protocols, written consent is not possible.