Clinical trial, with positive findings,  on 35 patients with kidney failure, who were receiving blood dialysis  three times a week at a hospital in Italy. Approximately half of the  participants were randomly allocated to receive a homeopathic medicine  called China rubra; the others received a dummy pill (placebo). They  were not told which treatment group they were in. After a period of 4  weeks, there was an improvement in weakness, lethargy and headache in  the patients who received homeopathic treatment compared to those who  received placebo.

Saruggia M, Corghi E (1992). Effects of homoeopathic dilutions of  china rubra on intradialytic symptomatology in patients treated with  chronic haemodialysis. British Homoeopathic Journal; 81:86-88.