Inclusion Criteria:  Provision of signed and dated informed consent form Stated willingness to comply with all study procedures and availability for the duration of the study Male or female, aged 18 and over, presenting with recent mild to moderate clinical symptoms of Covid-19 infection (per FDA guidance - see appendix 3) Positive COVID-19 infection confirmed with a rapid antigen test at screening (or RT-PCR within the last 3 days) and confirmed with a RT-PCR test at baseline A score of >/=3 on a minimum of 2 symptoms on the Modified FLU-PRO Plus Ability to take oral medication and be willing to adhere to the dosing regimen (Twice a day - BID for 14 days) For females of reproductive potential: negative pregnancy test at screening and use of highly effective contraception method during study participation and for an additional 4 weeks after the end of study drug administration For males of reproductive potential: use of condoms or other methods to ensure effective contraception with partner during study participation Agreement to adhere to Lifestyle Considerations (see section 5.3) throughout study duration  Exclusion Criteria:  Current or recent (within 4 weeks) treatment with any corticosteroids; however, high-dose inhaled steroids, which are used to treat acute or chronic bronchial inflammation, will be permitted Current or recent (within 4 weeks) treatment with any antivirals Room air oxygen saturation (SaO2) < 94% at screen Walking oximetry < 90% or participant unable to complete 6-minute walking oximetry test at screen Severe Covid-19 symptoms (severe per FDA classification - see appendix 3) Requires immediate admission to hospital for any reason Pregnancy or lactation Known allergic reactions to components of black seed oil, or thymoquinone Treatment with another investigational drug or other investigational intervention within 2 weeks of study start and throughout study duration. Significant hepatic disease (ALT/AST> 4 times the ULN); any laboratory parameter >/= 4 times the ULN History of moderate to severe CKD, (i.e. an estimated glomerular filtration rate less than 45 mL/min) at the time of enrollment or history of liver disease Patients with inflammatory bowel disease (such as Crohn's) that could affect the intestinal absorption of TQ Formula enteric coated capsules. Known HIV or Hepatitis C infection Influenza diagnosis (confirmed by testing) during screening or within prior 14 days Any uncontrolled condition(s) or diagnosis, both physical or psychological, or physical exam finding that precludes participation, as per investigator Current treatment with CYP2C9 substrates