- participants under the age of 18 - received any covid vaccine within the last 30 days - contraindications to ivermectin or doxycycline - history of seizure disorder or epilepsy - history of myocardial infarction or heart attack within the last one month - already receiving ivermectin or doxycycline for treatment of any other disease or disorder - allergies to ivermectin or doxycycline including angioedema, severe asthma, exfoliative dermatitis, steven jonson syndrome or psoriasis - history of angioedema, exfoliative dermatitis, steven johnson syndrome, psoriasis - currently pregnant or planning to conceive soon - breastfeeding - history of prior clostridium difficile infection

- participants under the age of 18 - received any covid vaccine within the last 30 days - contraindications to ivermectin or doxycycline - history of seizure disorder or epilepsy - history of myocardial infarction or heart attack within the last one month - already receiving ivermectin or doxycycline for treatment of any other disease or disorder - allergies to ivermectin or doxycycline including angioedema, severe asthma, exfoliative dermatitis, steven jonson syndrome or psoriasis - history of angioedema, exfoliative dermatitis, steven johnson syndrome, psoriasis - currently pregnant or planning to conceive soon - breastfeeding - history of prior clostridium difficile infection

- participants under the age of 18 - contraindications to ivermectin or doxycycline - history of seizure disorder - history of myocardial infarction within the last one month - already receiving ivermectin or doxycycline - history of severe allergic reactions to ivermectin or doxycycline - history of angioedema, exfoliative dermatitis, steven johnson syndrome, psoriasis - pregnancy - breastfeeding - history of prior clostridium difficile infection

- participants under the age of 18 - contraindications to ivermectin or doxycycline - history of seizure disorder - history of myocardial infarction within the last one month - already receiving ivermectin or doxycycline - history of severe allergic reactions to ivermectin or doxycycline - history of angioedema, exfoliative dermatitis, steven johnson syndrome, psoriasis - pregnancy - breastfeeding - history of prior clostridium difficile infection