Classic Formula

Liu Wei Di Huang Wan

Six Ingredient Rehmannia Pill — A Traditional Chinese Medicine Educational Guide

An educational overview of one of the most widely discussed classical formulas in Traditional Chinese Medicine (TCM), its traditional context, composition, and what modern research has and has not examined.

For educational purposes only. Not a substitute for medical advice.

1. What Is Liu Wei Di Huang Wan?

Liu Wei Di Huang Wan (六味地黄丸), often translated as "Six Ingredient Rehmannia Pill," is a classical herbal formula that has been discussed in TCM literature for centuries. It is traditionally associated with patterns of Kidney Yin deficiency (Shen Yin Xu) and is one of the most frequently referenced formulas in both classical texts and modern TCM practice discussions.

The formula first appears in historical TCM literature as a modification of earlier Rehmannia-based preparations. Its composition is built around a "three-supplementation, three-drainage" (三补三泻) structure — three ingredients traditionally understood as nourishing or supplementing, and three understood as preventing stagnation or excessive accumulation.

This page is educational only. It does not provide diagnosis, treatment, dosage, or individualized herbal recommendations. TCM pattern descriptions are traditional frameworks, not medical diagnoses.

2. Historical / Traditional TCM Context

In traditional TCM literature, Liu Wei Di Huang Wan is historically discussed in the context of Kidney system patterns. The Kidney, in TCM theory, is understood as governing growth, development, reproduction, and the body's foundational Yin and Yang energies. As individuals age, classical texts suggest that Yin may become relatively depleted, leading to patterns traditionally described as "deficient fire" rising.

The formula's historical use has been documented in discussions of:

  • Heat sensations in the palms, soles, or chest — traditionally interpreted as signs of Yin deficiency with floating fire
  • Night sweating during sleep — historically discussed in TCM texts as "steaming bones" or deficiency-related sweating that ceases upon waking
  • Dryness of the mouth or throat in the evening — traditionally associated with insufficient Yin fluids
  • Restlessness, difficulty maintaining sleep, or dream-disturbed sleep — traditionally linked to Heart-Kidney disharmony or insufficient Yin to anchor the Shen (spirit)
  • Low back soreness or weakness — traditionally associated with Kidney system patterns

These descriptions reflect traditional TCM frameworks recorded in classical literature. They do not correspond directly to biomedical diagnoses such as hormonal deficiency, and they should not be used for self-diagnosis or self-directed herbal use.

3. Formula Composition

The following herbs are traditionally described as composing Liu Wei Di Huang Wan in classical TCM formulary literature. Roles reflect traditional TCM theory and do not constitute modern pharmacological rankings.

Shu Di Huang (Rehmannia glutinosa)

Traditional role: Chief (Jun)

Traditionally understood as the foundational herb for nourishing Kidney Yin and blood in TCM literature.

Shan Zhu Yu (Cornus officinalis)

Traditional role: Deputy (Chen)

Traditionally associated with nourishing the Liver and Kidney, and stabilizing essence in classical texts.

Shan Yao (Dioscorea opposita)

Traditional role: Deputy (Chen)

Traditionally discussed as strengthening the Spleen and nourishing Kidney essence in TCM formulary theory.

Ze Xie (Alisma orientale)

Traditional role: Assistant (Zuo)

Traditionally understood as draining dampness and preventing the nourishing ingredients from causing stagnation.

Mu Dan Pi (Moutan cortex)

Traditional role: Assistant (Zuo)

Traditionally associated with clearing heat and activating blood in the context of this formula's structure.

Fu Ling (Poria cocos)

Traditional role: Assistant (Zuo)

Traditionally understood as strengthening the Spleen and draining dampness to support the formula's balance.

Important: Specific proportions and preparation methods may vary by tradition, manufacturer, or practitioner. This page lists composition only and does not provide dosage or preparation instructions.

4. Traditional Pattern Associations

In classical and modern TCM literature, Liu Wei Di Huang Wan is historically discussed in relation to the following traditional pattern frameworks. These are interpretive categories developed within TCM theory, not biomedical diagnoses.

Kidney Yin Deficiency (Shen Yin Xu)

The primary traditional pattern associated with this formula. Classical texts describe this pattern as involving depleted nourishing and cooling aspects of the Kidney system, with characteristics traditionally including heat sensations, night sweating, dry mouth, restlessness, and low back soreness.

Heart-Kidney Disharmony (Xin Shen Bu Jiao)

When Kidney Yin deficiency is described as affecting the Heart's ability to anchor the Shen (spirit), traditional texts may discuss sleep disturbance, dream-disturbed sleep, and palpitations. This pattern framework is traditionally associated with difficulty maintaining restful sleep.

Yin Deficiency with Empty Heat

A traditional TCM description in which insufficient Yin fails to balance Yang, leading to "deficient fire" manifesting as heat sensations, flushing, or sweating. This is distinguished in classical texts from "excess heat" patterns caused by external or internal pathogenic factors.

These pattern descriptions are traditional interpretive frameworks. They do not correspond to specific biomedical conditions, and individuals should not attempt to self-diagnose using these categories or self-prescribe herbal formulas based on pattern descriptions.

5. What Research Does and Does Not Show

Research on Liu Wei Di Huang Wan specifically, and on classical TCM formulas for menopause-related symptoms generally, remains limited. The following reflects the current state of published evidence.

Studies on Liu Wei Di Huang Wan and Related Formulas

A 2020 systematic review and meta-analysis published in Menopause examined randomized controlled trials of Chinese herbal medicine formulations for menopausal symptoms. The authors reported that some studies found associations between certain herbal formulations and reductions in hot flash frequency and severity compared to placebo. However, the review noted significant heterogeneity in herbal formulations, study designs, and outcome measures. Importantly, the authors highlighted that evidence specifically for sleep outcomes was limited.

Another systematic review published in JAMA (2016) examined plant-based therapies for menopausal symptoms, including some Chinese herbs that appear in formulas such as Liu Wei Di Huang Wan. The authors reported that certain formulations showed modest associations with symptom reduction, but the overall body of evidence was limited by small sample sizes, short follow-up periods, and methodological concerns.

Evidence on Individual Ingredients

Some ingredients found in Liu Wei Di Huang Wan have been studied individually in preclinical or clinical research. For example, Rehmannia glutinosa (Shu Di Huang) has been examined in pharmacological studies for its effects on inflammatory markers and metabolic pathways. However, studies on individual ingredients cannot be extrapolated to establish effects of the complete formula, as herbal combinations may produce different pharmacological profiles than single herbs alone.

The summaries above reflect what individual studies have reported, not established clinical recommendations. Research quality varies, and findings from traditional use do not constitute evidence-based medical guidance.

6. Evidence Limitations

The current body of research on Liu Wei Di Huang Wan has several important limitations that should be considered when evaluating any claims about this formula:

  • Limited direct evidence: Evidence specific to Liu Wei Di Huang Wan for menopause-related sleep disturbances is limited. Most published research has focused on broader categories of Chinese herbal medicine or on formula variants rather than the exact classical composition.
  • Heterogeneity of formulations: Studies that do examine Liu Wei Di Huang Wan or related formulas often use different preparations, dosages, or manufacturing sources, making it difficult to compare results across studies.
  • Short follow-up periods: The majority of published clinical trials have follow-up periods of 8–16 weeks, leaving long-term safety and efficacy unknown.
  • Methodological quality: Many studies in this area are small, single-center trials with limited blinding or placebo control. The authors of systematic reviews have consistently noted these methodological limitations.
  • Lack of standardization: Herbal product quality varies widely across manufacturers and regions. Study findings may not generalize to products available commercially.
  • Interaction data: Research on interactions between Liu Wei Di Huang Wan and hormone therapy, antidepressants, or other medications is limited.

As a result of these limitations, existing evidence does not establish a standard treatment recommendation for menopause-related sleep disturbances or any other specific condition.

7. Safety Boundaries

The following safety considerations apply to Liu Wei Di Huang Wan and similar classical TCM formulas. This information is educational and does not replace professional medical guidance.

Pregnancy and Breastfeeding

The safety of Liu Wei Di Huang Wan during pregnancy or breastfeeding has not been established through robust clinical trials. Individuals who are pregnant, planning pregnancy, or breastfeeding should consult a qualified healthcare provider before using any herbal products.

Children

Classical TCM formulas are traditionally discussed in the context of adult patterns. The safety and appropriateness of Liu Wei Di Huang Wan for children have not been established. Pediatric use should only occur under the guidance of a qualified practitioner.

Chronic Illness and Organ Function

Individuals with liver or kidney disease should exercise caution with herbal products, as these organs are involved in the metabolism and elimination of many herbal constituents. Consult a healthcare provider who is aware of your full medical history.

Medication Interactions

Herbal products may interact with prescription medications, including hormone therapy (HT), antidepressants, blood thinners, diabetes medications, and blood pressure medications. Always discuss herbal use with a healthcare provider who has access to your complete medication list.

Hormone-Sensitive Conditions

Individuals with a history of hormone-sensitive cancers (including breast, ovarian, and endometrial cancers) should exercise particular caution with herbal products that may have hormonal activity. The effects of Liu Wei Di Huang Wan on hormone-sensitive tissues have not been fully characterized.

Product Quality

Herbal supplements are not regulated as strictly as pharmaceutical drugs in many countries. Product quality, purity, and content can vary significantly between manufacturers and batches. Adulteration and contamination of herbal products have been documented in the literature.

When to Seek Medical Care

Persistent or severe symptoms — including heavy or unusual bleeding, severe mood changes, chest pain, unexplained weight loss, or symptoms that significantly affect daily functioning — require medical evaluation. Herbal products should not be used as substitutes for medical care.

Do not self-diagnose or self-treat based on TCM pattern descriptions.

The patterns described on this page are traditional theoretical frameworks. They require interpretation by a trained practitioner and should not be used as a basis for independent herbal use.

9. Sources

  1. Li Y, Yu S, Chen Y, et al. Chinese herbal medicine for menopausal symptoms: A systematic review and meta-analysis of randomized controlled trials. Menopause. 2020;27(3):367-379. DOI: 10.1097/GME.0000000000001477
  2. Franco OH, Chowdhury R, Troup J, et al. Use of plant-based therapies and menopausal symptoms: a systematic review and meta-analysis. JAMA. 2016;315(23):2554-2563. DOI: 10.1001/jama.2016.8012
  3. North American Menopause Society. The 2023 nonhormone therapy position statement of The North American Menopause Society. Menopause. 2023;30(6):573-590. DOI: 10.1097/GME.0000000000002205
  4. Scheid V, Bensky D, Ellis A, Barolet R. Chinese Herbal Medicine: Formulas & Strategies. 2nd ed. Seattle, WA: Eastland Press; 2009. (Classical formula composition and traditional context reference)
  5. Chen JK, Chen TT. Chinese Herbal Formulas and Applications. City of Industry, CA: Art of Medicine Press; 2009. (Traditional pattern associations and formula structure)
  6. World Health Organization. WHO Monographs on Selected Medicinal Plants. Vol 1. Geneva: World Health Organization; 1999. (Botanical identity and traditional use documentation)

Last reviewed: July 2026. This page is updated periodically as new evidence becomes available. If you identify an error or outdated reference, please contact us via our corrections policy.

Medical Disclaimer: The information on TCMIO is provided for educational purposes only. It is not intended as medical advice, diagnosis, or treatment.

Always consult a qualified healthcare professional before using any herbal products, starting any new treatment, or making changes to your existing healthcare regimen. Do not stop or modify any prescribed treatment without consulting your healthcare provider.

If you are experiencing severe or urgent symptoms, seek immediate medical attention by calling emergency services or visiting the nearest emergency department.