inclusion criteria: * real time pcr-approved positive covid-19 test (nasopharyngeal swabs). * both gender * age between 18 and 80 years * lack of participation in other clinical trials * covid-19 severity score ≤ 5 * hospitalized ≤48 hours. * signing informed consent and willingness of the participant to accept randomization to any assigned treatment

inclusion criteria: * real time pcr-approved positive covid-19 test (nasopharyngeal swabs). * both gender * age between 18 and 80 years * lack of participation in other clinical trials * covid-19 severity score ≤ 5 * hospitalized ≤48 hours. * signing informed consent and willingness of the participant to accept randomization to any assigned treatment

inclusion criteria: - real time pcr-approved positive covid-19 test (nasopharyngeal swabs). - both gender - age between 18 and 80 years - lack of participation in other clinical trials - covid-19 severity score ≤ 5 - hospitalized ≤48 hours. - signing informed consent and willingness of the participant to accept randomization to any assigned treatment

inclusion criteria: - real time pcr-approved positive covid-19 test (nasopharyngeal swabs). - both gender - age between 18 and 80 years - lack of participation in other clinical trials - covid-19 severity score ≤ 5 - hospitalized ≤48 hours. - signing informed consent and willingness of the participant to accept randomization to any assigned treatment