Administrative decision of the company

The purpose of this study is to evaluate the efficacy and safety of metformin glycinate at dose of 620 mg twice per day plus standard treatment comparing to standard treatment alone (we will use placebo) of patients who have metabolic syndrome or type 2 diabetes, which have severe acute respiratory syndrome secondary to SARS-CoV-2.

After being informed about the study and potential risks, all patients will give written informed consent and undergo a 1 day screening period to determine the eligibility for study entry. At day 0, patients who meet the eligibility requirements will be randomized in a double blind (participant and investigator) in a 1:1 ratio to metformin glycinate (620 mg, taken orally twice daily) plus standard treatment or placebo (taken orally,twice daily) plus standard treatment, both will be for 14 days.

Inclusion Criteria:

1. ≥ 18 years old
2. Ability to understand and the willingness to sign a written informed consent document before any study procedure
3. Metabolic syndrome or type 2 diabetes
4. Coronavirus infection, severe acute respiratory syndrome SARS-CoV- 2 confirmed by the Polymerase Chain Reaction test (PCR) ≤ 4 days before of the randomization.
5. Hospitalized patient.
6. Radiographic evidence of pulmonary infiltrates

Exclusion Criteria:

1. Participation in any other clinical trial of an experimental treatment for COVID-19
2. Evidence of multi-organ failure
3. Require mechanical ventilation before randomization
4. Pregnant patients

Parallel assignment experimental and placebo tablets will have same physical appearance and medicine box will be identified by kit number