inclusion criteria: 1. male and female patients ages 19 to less than 70 years 2. case of sars-cov-2 over 3 previously, confirmed by a positive test result or clinical confirmation by a physician 3. meet the clinical diagnostic criteria for pcfs 4. agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) 5. agree to use effective contraception for the trial duration, as appropriate, if female. 6. the participant resides within the delivery area for the drug as determined by fedex clinical trial services

inclusion criteria: 1. male and female patients ages 19 to less than 70 years 2. case of sars-cov-2 over 3 previously, confirmed by a positive test result or clinical confirmation by a physician 3. meet the clinical diagnostic criteria for pcfs 4. agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) 5. agree to use effective contraception for the trial duration, as appropriate, if female. 6. the participant resides within the delivery area for the drug as determined by fedex clinical trial services

inclusion criteria: male and female patients ages 19 to less than 70 years case of sars-cov-2 over 3 previously, confirmed by a positive test result or clinical confirmation by a physician meet the clinical diagnostic criteria for pcfs agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) agree to use effective contraception for the trial duration, as appropriate, if female. the participant resides within the delivery area for the drug as determined by fedex clinical trial services

inclusion criteria: male and female patients ages 19 to less than 70 years case of sars-cov-2 over 3 previously, confirmed by a positive test result or clinical confirmation by a physician meet the clinical diagnostic criteria for pcfs agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) agree to use effective contraception for the trial duration, as appropriate, if female. the participant resides within the delivery area for the drug as determined by fedex clinical trial services

inclusion criteria: male and female patients ages 19 to less than 70 years case of sars-cov-2, between 3 and 6 months previously, accepted by the pcrc based on positive test result or clinical confirmation by a physician meet the clinical diagnostic criteria for pcfs agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) agree to use effective contraception for the trial duration, as appropriate, if female.

inclusion criteria: male and female patients ages 19 to less than 70 years case of sars-cov-2, between 3 and 6 months previously, accepted by the pcrc based on positive test result or clinical confirmation by a physician meet the clinical diagnostic criteria for pcfs agree to maintain any other regular medications at current doses for the duration of the trial (except for essential need of new medication or dose change, as prescribed by a physician) agree to use effective contraception for the trial duration, as appropriate, if female.