1. Patient having severe COVID -19 infection <br/ >2. Patients presenting severe respiratory and/or multi systemic symptoms compatible with advanced COVID-19 and inter current acute or severe chronic diseases (i.e. active cancer). <br/ >3. Participants with hypersensitivity or intolerance or contraindication to the use of standard treatment <br/ >4. Participants with known allergy or contraindication to Vitamin D, Magnesium <br/ >5. History of having received any investigational drug in the preceding one month. <br/ >6. History of taking any kind of formulation or any other form of therapy for COVID 19 prophylaxis . <br/ >7. Unwilling to come for regular follow-up for the entire duration of the study. <br/ >8. COVID -19 RT-PCR Negative <br/ >9. Any condition that, in the opinion of the investigator, does not justify the subjectâ??s inclusion in the study. <br/ >10. Participants participating in other clinical study. <br/ >11. Participant receiving other immune enhancers. <br/ >12. Refusal to sign informed consent form <br/ >13. Symptomatic for sever COVID-19 infection needing ICU <br/ >14. Atherosclerotic Coronary Artery Disease <br/ >

1. Patient having severe COVID -19 infection <br/ >2. Patients presenting severe respiratory and/or multi systemic symptoms compatible with advanced COVID-19 and inter current acute or severe chronic diseases (i.e. active cancer). <br/ >3. Participants with hypersensitivity or intolerance or contraindication to the use of standard treatment <br/ >4. Participants with known allergy or contraindication to Vitamin D, Magnesium <br/ >5. History of having received any investigational drug in the preceding one month. <br/ >6. History of taking any kind of formulation or any other form of therapy for COVID 19 prophylaxis . <br/ >7. Unwilling to come for regular follow-up for the entire duration of the study. <br/ >8. COVID -19 RT-PCR Negative <br/ >9. Any condition that, in the opinion of the investigator, does not justify the subjectâ??s inclusion in the study. <br/ >10. Participants participating in other clinical study. <br/ >11. Participant receiving other immune enhancers. <br/ >12. Refusal to sign informed consent form <br/ >13. Symptomatic for sever COVID-19 infection needing ICU <br/ >14. Atherosclerotic Coronary Artery Disease <br/ >

N/A

N/A

1. Patient having severe COVID -19 infection <br/ >2. Patients presenting severe respiratory and/or multi systemic symptoms compatible with advanced COVID-19 and inter current acute or severe chronic diseases (i.e. active cancer). <br/ >3. Participants with hypersensitivity or intolerance or contraindication to the use of standard treatment <br/ >4. Participants with known allergy or contraindication to Vitamin D, Magnesium <br/ >5. History of having received any investigational drug in the preceding one month. <br/ >6. History of taking any kind of formulation or any other form of therapy for COVID 19 prophylaxis . <br/ >7. Unwilling to come for regular follow-up for the entire duration of the study. <br/ >8. COVID -19 RT-PCR Negative <br/ >9. Any condition that, in the opinion of the investigator, does not justify the subjectâ??s inclusion in the study. <br/ >10. Participants participating in other clinical study. <br/ >11. Participant receiving other immune enhancers. <br/ >12. Refusal to sign informed consent form <br/ >13. Symptomatic for sever COVID-19 infection needing ICU <br/ >14. Atherosclerotic Coronary Artery Disease <br/ >

1. Patient having severe COVID -19 infection <br/ >2. Patients presenting severe respiratory and/or multi systemic symptoms compatible with advanced COVID-19 and inter current acute or severe chronic diseases (i.e. active cancer). <br/ >3. Participants with hypersensitivity or intolerance or contraindication to the use of standard treatment <br/ >4. Participants with known allergy or contraindication to Vitamin D, Magnesium <br/ >5. History of having received any investigational drug in the preceding one month. <br/ >6. History of taking any kind of formulation or any other form of therapy for COVID 19 prophylaxis . <br/ >7. Unwilling to come for regular follow-up for the entire duration of the study. <br/ >8. COVID -19 RT-PCR Negative <br/ >9. Any condition that, in the opinion of the investigator, does not justify the subjectâ??s inclusion in the study. <br/ >10. Participants participating in other clinical study. <br/ >11. Participant receiving other immune enhancers. <br/ >12. Refusal to sign informed consent form <br/ >13. Symptomatic for sever COVID-19 infection needing ICU <br/ >14. Atherosclerotic Coronary Artery Disease <br/ >