Efficacy, Safety and Response Predictors of Adjuvant Astragalus Therapy for Diabetic Kidney Disease

This add-on open-label randomised controlled pragmatic trial aims to: 1. evaluate the effect of add-on astragalus treatment on type 2 diabetic patients with stage 2 to 3 chronic kidney disease and macroalbuminuria. 2. estimate treatment effect, variance, recruitment rate, attrition rate and change in clinical manifestation including Chinese medicine syndrome for parameters optimisation and feasibility assessment for a subsequent phase III randomised controlled trial. 3. assess response predictors for efficacy and safety among type 2 diabetic patients with stage 2 to 3 chronic kidney disease and macroalbuminuria receiving add-on astragalus treatment