inclusion criteria: 1. participants over 20 years of age 2. positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 3. blood oxygen saturation (spo2) \> 93%.

inclusion criteria: 1. participants over 20 years of age 2. positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 3. blood oxygen saturation (spo2) \> 93%.

inclusion criteria: participants over 20 years of age positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 blood oxygen saturation (spo2) > 93%.

inclusion criteria: participants over 20 years of age positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 blood oxygen saturation (spo2) > 93%.

inclusion criteria: 1. participants over 20 years of age 2. positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 3. blood oxygen saturation (spo2) > 93%.

inclusion criteria: 1. participants over 20 years of age 2. positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 3. blood oxygen saturation (spo2) > 93%.

inclusion criteria: eligibility criteria for inclusion in this study were participants over 20 years of age, positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 and blood oxygen saturation (spo2) > 93%. exclusion criteria included pregnant and breastfeeding women, individuals confirmed to be allergic to milk protein, those with a medical history of bronchial hyperactivity or pre-existing respiratory diseases, and icu inpatients with covid-19.

inclusion criteria: eligibility criteria for inclusion in this study were participants over 20 years of age, positive for nasopharyngeal swab reverse transcriptase polymerase chain reaction (rt-pcr) for covid-19 and blood oxygen saturation (spo2) > 93%. exclusion criteria included pregnant and breastfeeding women, individuals confirmed to be allergic to milk protein, those with a medical history of bronchial hyperactivity or pre-existing respiratory diseases, and icu inpatients with covid-19.