Inclusion Criteria:  Willing and able to provide informed consent. Males and females of ≥ 18 years of age Patient with mild COVID-19 infection having ≥ 1 symptoms. Laboratory confirmed Covid-19 infection by Reverse Transcription Polymerase Chain Reaction (RT-PCR) in nasopharyngeal sample (within 72 hours prior to randomization). Patient should have at least one pre-existing high-risk feature for developing severe Covid-19 illness. Ability to swallow and retain oral medication. Male patient who is surgically sterile, or who is willing to agree to use a contraceptive measure. Women of childbearing potential should be willing to use a medically acceptable method of contraception. Willing to receive telephone calls or have videoconferences with study team personnel. Willing and able to understand the nature of this study, comply with the study procedures and follow-up procedures as per the study protocol.  Exclusion Criteria:  Patient with asymptomatic Covid-19 infection. Patient who has experienced the onset of any of Covid-19 symptoms > 5 days at the time of randomization. Moderate to Severe COVID-19 infection Patient with Covid-19 re-infection Subjects who are severely immunocompromised Subjects with autoimmune diseases Patients with any bleeding disorder e.g., hemophilia and von Willebrand disease. Current use of other DHODH inhibitors including teriflunomide or leflunomide. Patients who are on or immediately require Covid-19 directed treatment such as antivirals, immunomodulatory treatment, convalescent plasma, oral/ intravenous steroids, or monoclonal antibodies at the time of screening. Patients who have had received one or two doses of vaccine for Covid-19. Patients participating in another clinical study or use of any investigational product within 4 weeks or 5 half-lives of the drug, whichever is longer, before the date of dosing