Stanford University
Dialysis removes potentially harmful chemicals from the blood but can also remove potentially valuable chemicals. One potentially valuable chemical called ergothioneine, which comes from the diet, is low in the blood of people receiving dialysis. For this research study, the investigators hope to learn how well a daily ergothioneine supplement will replenish the levels in the blood of people with kidney failure.
Inclusion Criteria: * kidney failure receiving hemodialysis or peritoneal dialysis Exclusion Criteria: * blood transfusion within 90 days * taking supplements which contain ergothioneine
Participants will receive ergothioneine capsule daily for 12 weeks.
Participants will receive placebo capsule daily for 12 weeks.