A. Moderately ill COVID-19 patient and asymptomatic to mild COVID-19 patent having multiple comorbidity  Inclusion Criteria  Hospital admitted patients tested positive COVID-19 within 24 hours in the laboratory by RT-PCR. Patients with asymptomatic, mild to moderate illness of COVID-19. Age group 18 year and above. Consent of the patients, wish to be included in the study willingly.  Exclusion Criteria:  Patients with critical COVID-19 and moderate COVID-19 with other complication. Patients having thyroid dysfunction, pregnant or lactating mother. It should not be used prior to or after radioiodine scintigraphy or radioiodine treatment of thyroid carcinoma. Patients allergic to iodine should be avoided Have participated in other clinical study Subjects with other severe acute or chronic conditions that may increase the risk of participation in the study and study treatment, or may interfere with interpretation of study results, and judged by the investigator as not suitable for participation in this clinical trial.  B. Healthy Individual  Inclusion Criteria:  Healthy individual (non COVID-19) Age -18 years and above (as below18 years lesser concentration of drug may be required). Consent of the participants who wish to participate.  Exclusion criteria:  Participants who has any major comorbidity. Participants having thyroid dysfunction, pregnant or lactating mother. It should not be used prior to or after radioiodine scintigraphy or radioiodine treatment of thyroid carcinoma. Participants allergic to iodine should be avoided Have participated in other clinical study Subjects with other severe acute or chronic conditions that may increase the risk of participation in the study and study treatment, or may interfere with interpretation of study results, and judged by the investigator as not suitable for participation in this clinical trial.