Table 3.

Exclusion and inclusion criteria.

Exclusion criteria	(1) With a history of pulmonary embolism, pulmonary fibrosis, chronic obstructive pulmonary disease, pleural effusion, active tuberculosis, bronchiectasis, and pneumonectomy
	(2) Pregnant and lactating women
	(3) Showing exacerbation of symptoms requiring additional medications during screening period
	(4) Malignant tumour and blood disease
	(5) Participating in other clinical trials in the past three months
	(6) Use of oral corticosteroids in the previous four weeks
	(7) Experienced an infectious disease within four weeks
	(8) With heart, liver, kidney, or other organ diseases
Inclusion criteria	(1) 18 to 70 years old; any gender
	(2) With mild-to-moderate asthma
	(3) ACT ≥ 20 score, FEV1% ≥ 60%
	(4) Having a history of recurrent asthma exacerbations in the past two years
	(5) Without upper and lower respiratory tract infections in the past four weeks
	(6) With Kidney and Qi deficiency based on TCM syndrome differentiation
	(7) Understanding of the research protocol and consent to participate