There are no herb, teas or supplements that can be used to improve kidney function and lower the serum creatinine. Your mother should consult with a nephrologist and follow his or her advice about treatment of chronic kidney disease (CKD). Kidney disease and heart disease are very common causes of CKD and must be managed by a nephrologist to try and maintain as much kidney function as possible. The goal of treatment is to slow the process that causes the CKD and try to slow the pace of progression.
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