- participant who had a previous diagnosis of covid-19. - participant positive in the initial screening for igm or igg or a positive rt-pcr for sars-cov-2. - participant with the following comorbidities: hypertension, coronary heart disease, diabetes mellitus, obesity, chronic lung disease, cancer, kidney failure, or other hematological disease. - pregnant woman. - participant that are part of another clinical trial or are taking any supplement or preventive treatment for covid-19. - participant with known allergy to cow's milk protein.

- participant who had a previous diagnosis of covid-19. - participant positive in the initial screening for igm or igg or a positive rt-pcr for sars-cov-2. - participant with the following comorbidities: hypertension, coronary heart disease, diabetes mellitus, obesity, chronic lung disease, cancer, kidney failure, or other hematological disease. - pregnant woman. - participant that are part of another clinical trial or are taking any supplement or preventive treatment for covid-19. - participant with known allergy to cow's milk protein.