1. pregnant or breastfeeding women 2. known allergy to dairy products 3. on corticosteroids for covid-19 therapy at the time of screening 4. subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions 5. concurrent malignancy requiring chemotherapy 6. known renal insufficiency with glomerular filtration rate (egfr) \< 30 ml/min (including patients receiving hemodialysis or hemofiltration). 7. alt or ast \> 5 times the upper limit of normal 8. subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

1. pregnant or breastfeeding women 2. known allergy to dairy products 3. on corticosteroids for covid-19 therapy at the time of screening 4. subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions 5. concurrent malignancy requiring chemotherapy 6. known renal insufficiency with glomerular filtration rate (egfr) \< 30 ml/min (including patients receiving hemodialysis or hemofiltration). 7. alt or ast \> 5 times the upper limit of normal 8. subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

pregnant or breastfeeding women known allergy to dairy products on corticosteroids for covid-19 therapy at the time of screening subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions concurrent malignancy requiring chemotherapy known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). alt or ast > 5 times the upper limit of normal subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

pregnant or breastfeeding women known allergy to dairy products on corticosteroids for covid-19 therapy at the time of screening subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions concurrent malignancy requiring chemotherapy known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). alt or ast > 5 times the upper limit of normal subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

pregnant or breastfeeding woman known allergy to dairy products on corticosteroids for covid-19 therapy at the time of screening subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions concurrent malignancy requiring chemotherapy known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). alt or ast > 5 times the upper limit of normal subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

pregnant or breastfeeding woman known allergy to dairy products on corticosteroids for covid-19 therapy at the time of screening subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions concurrent malignancy requiring chemotherapy known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). alt or ast > 5 times the upper limit of normal subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

1. pregnant or breastfeeding woman 2. known allergy to dairy products 3. on corticosteroids for covid-19 therapy at the time of screening 4. subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions 5. concurrent malignancy requiring chemotherapy 6. known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). 7. alt or ast > 5 times the upper limit of normal 8. subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons

1. pregnant or breastfeeding woman 2. known allergy to dairy products 3. on corticosteroids for covid-19 therapy at the time of screening 4. subjects who are taking corticosteroids or other immunosuppressive drugs for other medical conditions 5. concurrent malignancy requiring chemotherapy 6. known renal insufficiency with glomerular filtration rate (egfr) < 30 ml/min (including patients receiving hemodialysis or hemofiltration). 7. alt or ast > 5 times the upper limit of normal 8. subjects receiving other immune-based therapy for covid-19, such as convalescent plasma, immunoglobulin products, interferons