Table 2

Chinese traditional medicine and asthma

 Reference No, definition, duration of trialTreatment (n) Control (n)Primary measuresResults Jadad score
Li et al 4 61 asthmatics, 8 weeksGinkgo leaf liquor (39)Placebo (22)Lung function tests Clinically relevant increase in FEV1 at 8 weeks (p<0.05), significantly greater than control (p<0.05)1
Shao et al 5 150 bronchial asthmatics (moderate to severe), 1 month L wallichii mixture (100)Control tea (50)Lung function tests; subjective symptomsIncrease in FEV1 with treatment but not clinically significant. Improvement in subjective symptoms with treatment but no criteria or statistics1
Xuet al 6 117 cold and heat type asthmatics, 2 weeksSBR decoction (58) Control herbal tea (59)Lung function testsIncrease in FEV1 with treatment but not clinically relevant1
Xuet al 7 41 severe asthmatics, 4–6 monthsRKISP decoction and steroid aerosol (21)Steroid aerosol (20)Lung function testsClinically relevant increase in FEV1 (p<0.05) but not greater than control1
Xu and Xu8 57 seasonal asthmatics, 3 months IKPA tablets and inhaled BDP (32) Inhaled BDP only (25)Lung function testsClinically relevant increase in FEV1 with treatment (p<0.001), significantly greater than control (p<0.05)1
Zou et al 9 68 asthmatics of ‘cold type’, 8 weeks Wenyang Tonglulo mixture (34)Oral salbutamol and aerosol BCP (34)Lung function testsClinically relevant increase in FEV1 with treatment (p<0.05), significantly greater than control (p<0.05)1
  • SBR = strengthening body resistance; IKPA = invigorating kidney for preventing asthma; RKISP = reinforcing kidney and invigorating spleen principle; FEV1= forced expiratory volume in one second; BCP = beclomethasone dipropionate.