Clinical Study to Evaluate the Effect of Food Supplement in People Infected With Coronavirus

Inclusion Criteria: 1. Cohort 1: * males and females between 55 years and 85 years of age; * history of close contact (cohabit) with a Family member or a person newly diagnosed with SARS-CoV-2 infection; * negative RT-PCR COVID-19 test on the screening immediately after contact and prior to start treatment of the study. 2. Cohort 2: * males and females between 18 years and 85 years of age; * positive RT-PCR COVID-19 test and medical history and physical exam compatible with asymptomatic or mild COVID-19 pneumonia. Evaluation of clinical outcomes: oxygen requirements, hospitalization breathless and others; * Female subjects of childbearing potential must : * have a negative serum pregnancy test at screening and a negative urine pregnancy test on the day of each study supplementation; * no breast-feeding; * agree to use one of the following methods of contraception from enrollment in study until 30 days after last supplementation (only if in sexual relationships with men): hormonal (e.g. oral, transdermal, intravaginal, implant, or injection); double barrier (i.e., condom, diaphragm, or cervical cap with spermicide); intrauterine device (IUD) or system (IUS); vasectomized partner (6 months minimum); or abstinence; bilateral tubal ligation (if no conception post-procedure); tubal occlusion; or bilateral salpingectomy. Women are considered non-child-bearing potential if they are post-menopausal (defined as at least 12 months spontaneous amenorrhea and confirmed with FSH \> 40 mIU/ml) or have had documented hysterectomy and/or oophorectomy. system (IUS); vasectomized partner (6 months minimum); or abstinence; bilateral tubal ligation (if no conception post-procedure); tubal occlusion; or bilateral salpingectomy; * Normal laboratory values of sodium, potassium, ALT, AST, total bilirubin, alcaline phosphatase, creatinine, fasting glucose, total WBC count, hemoglobina and platelet count; * No medical history of alcohol or drug abuse Exclusion Criteria: * Hormonal replacement therapy; * Severe COVID-19 pneumonia according to CDC criteria; * Positive test for hepatitis B surface antigen, hepatitis C virus antibody, or human immunodeficiency virus types 1 or 2 antibodies; * Participation in another experimental protocol and/or receipt of any investigational products within the past 3 months prior to Screening; * Immunosuppressive cytotoxic therapies (e.g., chemotherapy drugs or radiation) in the past 6 months prior to Screening; * Subjects unable to sign the inform consent to participate into the study; * History of any other acute or uncontrolled chronic illness (including, hypertension, cardiovascular, pulmonary, neurological, hepatic, rheumatic, hematological, metabolic or renal disorders) that is not on medication regimen for at least the past 6 months; * Medication or supplements that may interfere with the evaluation of the safety and tolerability of the study drug such as ACE Inhibitors, Angiotensin II Receptor Blockers (ARBs) (e.g. vitamin B3 and L-carnitine/acetyl-carnitine).