Study showed that a combination of Astragalus and Rehmannia Root Extract had a 91% 'effective' rate in treating Chronic Kidney Disease. It was markedly effective for proteinuria, hematuria, improvement and recovery of renal functions, edema, anemia, anorexia etc in comparing with the control group. It showed no adverse effects on functions of liver, kidney, heart and GI tract.
Su ZZ, He YY, Chen G. [Clinical and experimental study on effects of man-shen-ling oral liquid in the treatment of 100 cases of chronic nephritis]. Zhongguo Zhong Xi Yi Jie He Za Zhi. 1993 May;13(5):269-72, 259-60. Chinese.