inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. any prior or current treatment with any agent for covid-19. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) body mass index > 40 based on participant-reported weight and participant-reported height. participant-reported weight of less than 35kg. any history of radiation or chemotherapy for cancer within the last 3 months. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). any history of chronic pulmonary disorders any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). any history of any adverse event to green tea extract or any herbal products. prescreening alcohol use disorders identification test (audit) score of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. men or premenopausal women not using adequate contraception. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.

inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. any prior or current treatment with any agent for covid-19. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) body mass index > 40 based on participant-reported weight and participant-reported height. participant-reported weight of less than 35kg. any history of radiation or chemotherapy for cancer within the last 3 months. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). any history of chronic pulmonary disorders any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). any history of any adverse event to green tea extract or any herbal products. prescreening alcohol use disorders identification test (audit) score of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. men or premenopausal women not using adequate contraception. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.

1. inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. 2. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. 3. any prior or current treatment with any agent for covid-19. 4. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) 5. body mass index > 40 based on participant-reported weight and participant-reported height. 6. participant-reported weight of less than 35kg. 7. any history of radiation or chemotherapy for cancer within the last 3 months. 8. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). 9. any history of chronic pulmonary disorders 10. any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). 11. any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). 12. any history of any adverse event to green tea extract or any herbal products. 13. prescreening alcohol use disorders identification test (audit) score of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. 14. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. 15. men or premenopausal women not using adequate contraception. 16. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.

1. inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. 2. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. 3. any prior or current treatment with any agent for covid-19. 4. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) 5. body mass index > 40 based on participant-reported weight and participant-reported height. 6. participant-reported weight of less than 35kg. 7. any history of radiation or chemotherapy for cancer within the last 3 months. 8. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). 9. any history of chronic pulmonary disorders 10. any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). 11. any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). 12. any history of any adverse event to green tea extract or any herbal products. 13. prescreening alcohol use disorders identification test (audit) score of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. 14. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. 15. men or premenopausal women not using adequate contraception. 16. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.

1. any usage within the past month of any dietary supplement other than a general multivitamin. 2. inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. 3. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. 4. any prior or current treatment with any agent for covid-19 as part of covid-19 clinical trial. 5. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) 6. body mass index > 40 based on participant-reported weight and participant-reported height. 7. participant-reported weight of less than 35kg. 8. any history of radiation or chemotherapy for cancer within the last 3 months. 9. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). 10. any history of chronic pulmonary disorders 11. any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). 12. any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). 13. any history of any adverse event to green tea extract or any herbal products. 14. any current moderate alcohol consumption, defined as 1 standard drink per day for women and 2 drinks per day for men; whereby 1 standard drink is equivalent to: 12 oz beer (5% alcohol); 5 ounces of wine (12% alcohol), and 1.5 ounces of 80 proof (40% alcohol). 15. audit screen result of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. 16. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. 17. men or premenopausal women not using adequate contraception. 18. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.

1. any usage within the past month of any dietary supplement other than a general multivitamin. 2. inability to comply with study or follow-up procedures, or provide regular updates to their health status when contacted by the stri personnel via email, sms, or phone. 3. any prior or current hospitalization for covid-19 or any need for hospitalization for any reason. 4. any prior or current treatment with any agent for covid-19 as part of covid-19 clinical trial. 5. any known allergies or known toxicities to any of the specific ingredients in stri formula (including ascorbic acid, vitamin d, zinc, copper, amla, caffeic acid, coffee, bovine lactoferrin, milk, quercetin, hesperidin, oranges, citrus fruits, and/or green tea) 6. body mass index > 40 based on participant-reported weight and participant-reported height. 7. participant-reported weight of less than 35kg. 8. any history of radiation or chemotherapy for cancer within the last 3 months. 9. any history of cardiac arrythmias, hemochromatosis, renal (including any known gfr < 60ml/min) or hepatic disease (including chronic liver disease). 10. any history of chronic pulmonary disorders 11. any history of any gastrointestinal surgery or disease (including bariatric surgery or gastrointestinal resection, inflammatory bowel disease, or chronic intestinal diseases, such as (but not limited to) eosinophilic enteritis or autoimmune enteritis). 12. any history of mineral or vitamin overload or deficiency (including chronic iron overload states, copper overload states, or ascorbic acid, vitamin d, zinc, or copper deficiencies). 13. any history of any adverse event to green tea extract or any herbal products. 14. any current moderate alcohol consumption, defined as 1 standard drink per day for women and 2 drinks per day for men; whereby 1 standard drink is equivalent to: 12 oz beer (5% alcohol); 5 ounces of wine (12% alcohol), and 1.5 ounces of 80 proof (40% alcohol). 15. audit screen result of 8 or more indicating hazardous or harmful alcohol consumption, or alcohol dependence. 16. pregnant or nursing/breastfeeding participants or participants intending to become pregnant within the next 24 months. 17. men or premenopausal women not using adequate contraception. 18. any other factors as judged by the principal investigator that would cause harm or increased risk to the participant or preclude the participant's full adherence with or completion of the study.