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Table 1 Therapeutic regimen of this study

From: Efficacy of the combination of modern medicine and traditional Chinese medicine in pulmonary fibrosis arising as a sequelae in convalescent COVID-19 patients: a randomized multicenter trial

Drug Dosage Taking drug Remarks
Pirfenidone The initial dosage is 200 mg/time, 3 times/day; and then add the dose to 600 mg/time by 200 mg/day. Finally, the dose is 600 mg/time, 3 times/day for 12 months Take it half an hour after breakfast, lunch and dinner, respectively Drug must be used for each participant
Acetylcysteine 200 mg/time, 3 times/day for 12 months Take it half an hour after breakfast, lunch and dinner, respectively Selective use for all subjects
Glucocorticoid 0.5 mg × kg−1 × day−1 for 1 month, and then 0.25 mg × kg−1 × day−1 for 2 months, and then the dose decline to 0.125 mg × kg−1 × day−1 for 12 months Take it half an hour after breakfast, lunch and dinner, respectively Selective use for all subjects
Chinese medicine granules 1 8 g/bag, 2 bags/ time, 3 times/day for 12 months Take this granula after mixing it with water, take it half an hour after breakfast, lunch and dinner, respectively Drug must be used for each individual in treatment group
Chinese medicine granules 2 8 g/bag, 2 bags/time, 3 times/day for 12 months Take this granula after mixing it with water, take it half an hour after breakfast, lunch and dinner, respectively Drug must be used for each volunteer in control group
  1. kg kilogram, mg milligram