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Limited evidenceGeneral health

Liu Wei Di Huang Wan

A six-herb Chinese formula used for centuries as a kidney-yin tonic. Meta-analyses of it as an add-on to conventional treatment report benefits in diabetic kidney disease and cognition, but almost all the trials are small, Chinese-language and at high risk of bias.

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What the science says

  • Add-on for cognitive impairment Limited evidence

    A 2026 systematic review and meta-analysis of Liuwei Dihuang as adjunctive therapy for cognitive impairment reported improvement over conventional therapy alone. The included trials were small and largely lacked blinding, so the pooled effect is not reliable.

  • Add-on in early diabetic nephropathy Limited evidence

    A systematic review and meta-analysis of Liuwei Dihuang pills in early diabetic nephropathy found reductions in urinary albumin markers when added to standard care. Trial quality was low and publication bias in this literature is well documented.

Dosage & safety

Studied doseTraditional dose is about 8 concentrated pills (roughly 6 g of the formula) two or three times daily, or the equivalent decoction. Trials used varied preparations, so doses are not standardised.
SafetyGenerally well tolerated; digestive upset and loose stools are the usual complaints. Product quality varies widely and imported patent medicines have been found adulterated with pharmaceuticals. Not a replacement for treatment of diabetes or kidney disease, and interactions with antidiabetic drugs are plausible.

How to take it

TimingTake it two or three times daily, traditionally before meals.
With food?Between meals with warm water is the traditional instruction; there is no evidence food changes the effect.
Worth knowingImported patent medicines under this name have been found spiked with prescription drugs, so buy only from suppliers that publish third-party testing.

Frequently asked questions

Does liu wei di huang wan work?

Liu Wei Di Huang Wan has limited evidence: meta-analyses report benefits as an add-on in cognitive impairment and early diabetic nephropathy, but the trials are small, mostly Chinese-language and at high risk of bias. The pooled effects are not reliable.

How do I take liu wei di huang wan?

The traditional dose of Liu Wei Di Huang Wan is about 8 concentrated pills (roughly 6 g) two or three times daily, between meals with warm water. Trial preparations varied, so doses are not standardised.

Is liu wei di huang wan safe?

Liu Wei Di Huang Wan is generally well tolerated, with digestive upset and loose stools the usual complaints, but imported patent medicines have been found adulterated with prescription drugs. Buy only from suppliers publishing third-party testing, and do not use it in place of diabetes or kidney treatment.

Scientific references

Related in General health

Herbal medicines: what the evidence says (335)