Dong Quai (Dang Gui) for Hormone Balance

By Dr (TCM) Attilio D'Alberto | Traditional Chinese Medicine Practitioner, Wokingham

Dong quai — known in Chinese medicine as Dang Gui (Angelica sinensis) — is sometimes called "the queen of women's herbs" or "the female ginseng". It is one of the most prescribed herbs in the entire Chinese pharmacopoeia, appearing in dozens of classical formulas for menstrual irregularity, infertility, postnatal recovery, anaemia, dysmenorrhoea, perimenopausal symptoms and pain. In contemporary Western herbal medicine it is often marketed as a "natural oestrogen", which is an oversimplification — its mechanism is more sophisticated and its uses are more specific than that label suggests. This page explains what dong quai actually does, when it is appropriate, when it isn't, the right dose, the right combination, and the safety considerations every user should know.

On this page

1. What is dong quai?
2. TCM properties and actions
3. Active compounds
4. Is dong quai really a "natural oestrogen"?
5. Menstrual conditions
6. Fertility uses
7. Postnatal recovery
8. Menopausal symptoms
9. Blood-building uses
10. Key Dang Gui formulas
11. Dosing and forms
12. Cautions and interactions
13. FAQs

What is dong quai?

Dang Gui is the dried root of Angelica sinensis, native to China, Japan and Korea. The root is divided into three parts in classical practice — head (most blood-tonifying), body (balanced), and tails (most blood-moving) — though most modern preparations use the whole root. It has been used continuously for over 2,000 years and is the principal women's tonic in the Chinese tradition.

TCM properties and actions

• Taste: sweet, acrid, slightly bitter
• Temperature: warm
• Channels entered: Liver, Heart, Spleen

Four core actions:

• Tonifies blood — for pale tongue, dizziness, palpitations, scant menses, anaemia.
• Invigorates blood and stops pain — for blood stasis with pain, dysmenorrhoea, traumatic injury.
• Regulates menstruation — for irregular, painful, scanty or amenorrhoeic periods.
• Moistens the intestines — for blood-deficient constipation, dry stools.

The dual action of building AND moving blood is its most distinctive feature — unlike pure blood tonics like Shu Di Huang (which build but can be sticky), Dang Gui ensures the blood it generates also circulates properly. This makes it essential where blood deficiency coexists with stagnation.

Active compounds

• Ferulic acid — antioxidant, anti-inflammatory, mild oestrogen-receptor activity.
• Z-ligustilide — antispasmodic, anti-inflammatory; a major active in the essential oil.
• Polysaccharides — immune-modulating; promote red blood cell production.
• Coumarins — anticoagulant effects (relevant to drug interactions).
• Vitamin B12 analogues — though human bioavailability is uncertain.
• Iron, calcium, magnesium — at modest levels.

Is dong quai really a "natural oestrogen"?

Not in any straightforward sense. Ferulic acid binds weakly to oestrogen receptors, and some studies suggest dong quai acts as a selective oestrogen receptor modulator (SERM) — oestrogen-like in some tissues and anti-oestrogenic in others. Importantly:

• Used alone in Western RCTs for menopause symptoms, dong quai has not consistently beaten placebo for hot flushes.
• Used as part of a traditional formula combination, outcomes are markedly better.
• Its main mechanisms are blood-building, anti-inflammatory and uterine-relaxing, not oestrogen-mimicking.
• For women with oestrogen-sensitive conditions (endometriosis, fibroids, hormone-sensitive cancers), use should be assessed by a qualified practitioner — the SERM-like activity makes blanket warnings inaccurate but caution is appropriate.

Menstrual conditions

Dang Gui is the most widely used herb for menstrual irregularity in Chinese medicine. Indications:

• Painful periods (dysmenorrhoea) — antispasmodic effect on uterine smooth muscle; used in Wen Jing Tang, Xiao Fu Zhu Yu Tang and many others.
• Scanty or absent periods — blood-building action; used in Si Wu Tang, Ba Zhen Tang.
• Late periods — moves blood to bring on delayed flow.
• Irregular cycles — regulates by addressing the underlying blood deficiency or stasis pattern.
• Endometriosis — combined with blood-moving herbs in Gui Zhi Fu Ling Wan and similar formulas.
• Fibroids — blood-stasis pattern with masses.
• PMS — particularly when blood deficiency contributes to anxiety and tearfulness.

Fertility uses

• Improves uterine blood flow — relevant for thin endometrium and implantation failure.
• Builds blood for endometrial development across the follicular phase.
• Regulates the cycle — supports more reliable ovulation timing.
• Used preconception as part of cycle-phase prescribing.
• Stopped at positive pregnancy test in most cases due to blood-moving action; pregnancy-safe Dang Gui formulas (e.g., Dang Gui Bu Xue Tang variants) are sometimes continued under specialist guidance.

Postnatal recovery

Dang Gui is the principal postnatal recovery herb in TCM. Used for:

• Replenishing blood lost during birth.
• Promoting expulsion of lochia (post-birth uterine bleeding).
• Supporting uterine recovery.
• Anaemia after birth.
• Postnatal abdominal pain from blood stasis.
• Postnatal constipation (its moistening effect on intestines).

Sheng Hua Tang ("Generation and Transformation Decoction") with Dang Gui as principal herb is the classical postnatal formula given in the first 7-10 days after birth in Chinese practice.

Menopausal symptoms

Used alone, dong quai has mixed evidence for hot flushes. Used in combination — particularly with Shu Di Huang (Liu Wei Di Huang Wan-based formulas), Bai Shao, He Shou Wu, Mu Dan Pi — outcomes are consistently better. Particularly useful in perimenopause where blood deficiency overlaps with declining yin. Less useful where the dominant picture is heat (hot flushes, night sweats) without a blood-deficient quality — in those cases the cooler yin tonics (Zhi Bai Di Huang Wan) take precedence.

Blood-building uses

Dang Gui combined with Huang Qi (astragalus) in Dang Gui Bu Xue Tang ("Dang Gui Tonify Blood Decoction") is the classical blood-building formula. Just two herbs in a 5:1 ratio of Huang Qi to Dang Gui. Modern research shows it raises haemoglobin, supports red blood cell production, modulates the immune system, and protects against radiation-induced anaemia. Used for:

• Iron-deficiency anaemia (alongside iron supplementation).
• Anaemia of chronic disease.
• Postnatal anaemia.
• Recovery from heavy menstruation.
• Recovery from chemotherapy.
• Vegetarians with persistent low ferritin.

Key Dang Gui formulas

• Si Wu Tang — Four Substances Decoction; the foundation blood-nourishing formula. Dang Gui is the chief herb.
• Ba Zhen Tang — Eight Treasure Decoction; combined qi and blood deficiency.
• Dang Gui Bu Xue Tang — just Huang Qi and Dang Gui; classical anaemia formula.
• Dang Gui Shao Yao San — for blood deficiency with damp; used in pregnancy under specialist guidance.
• Wen Jing Tang — Warm the Menses; cold uterus, dysmenorrhoea, blood deficiency.
• Xiao Yao San — Free and Easy Wanderer; Liver qi stagnation with blood deficiency.
• Sheng Hua Tang — postnatal blood-moving formula.
• Tao Hong Si Wu Tang — Si Wu Tang plus Tao Ren and Hong Hua; for blood stasis.
• Bu Yang Huan Wu Tang — qi deficiency with blood stasis; classical post-stroke formula.
• Gui Pi Tang — Heart and Spleen blood deficiency.

Dosing and forms

• Decoction: 6-15 g per day; 9 g typical.
• Pharmaceutical-grade granules: 1-3 g/day of standardised concentrate within a tailored formula.
• Tincture: 2-4 mL three times daily.
• Capsules (standardised): 500-1,000 mg twice daily; less commonly used in proper TCM practice.
• Wine extract — traditional preparation that enhances blood-moving action; used in postnatal recovery and dysmenorrhoea.

I prescribe Dang Gui only within a tailored formula of pharmaceutical-grade granules from Sun Ten in Taiwan, never as a single. Single-herb use rarely matches the clinical effect of properly blended formulas, and combination is essential for safety in many patterns.

Cautions and interactions

• Pregnancy — generally avoided because of blood-moving and uterine-stimulating effects. Pregnancy-safe Dang Gui formulas (e.g., Dang Gui Shao Yao San, modified Dang Gui Bu Xue Tang) are used under specialist guidance only.
• Heavy menstruation — its blood-moving action may worsen heavy flow; use cautiously and pause during menstruation if flow is excessive.
• Anticoagulants (warfarin, apixaban, rivaroxaban) and antiplatelets (aspirin, clopidogrel) — coumarins in Dang Gui can increase bleeding risk. Tell your prescriber.
• Surgery — stop 1-2 weeks before any planned surgery.
• Hormone-sensitive conditions — endometriosis, fibroids, hormone-sensitive cancers — assess with practitioner; the SERM-like activity isn't simply oestrogenic but caution is sensible.
• Acute infection or fever — pause; tonifying herbs are generally avoided during acute illness.
• Diarrhoea or weak digestion — its moistening effect can worsen loose stools; pair with Spleen-strengthening herbs.
• Photosensitivity — rare; some patients may notice increased sun sensitivity.

Frequently asked questions

What is dong quai used for?

Dong quai (Dang Gui) is used principally for menstrual irregularity, painful periods, scanty flow, blood-deficiency anaemia, postnatal recovery, perimenopausal symptoms, and as a cornerstone in fertility prescribing. It builds and moves blood simultaneously.

Is dong quai really a natural oestrogen?

It has weak oestrogen-receptor activity and acts as a selective modulator (SERM-like) — not a straightforward oestrogen. Its main mechanisms are blood-building, anti-inflammatory and uterine-relaxing.

Can I take dong quai for hot flushes?

Used alone, evidence is mixed. Used as part of a tailored Chinese formula (e.g., modified Liu Wei Di Huang Wan with Dang Gui), outcomes are better.

Can I take dong quai when trying to conceive?

Yes — it's a cornerstone fertility herb in TCM. Best used within a cycle-phase tailored formula by a practitioner. Stop or adjust at positive pregnancy test.

Is dong quai safe in pregnancy?

Generally avoided. Specific pregnancy-safe Dang Gui formulas exist (Dang Gui Shao Yao San) but should only be used under specialist supervision.

Can I take dong quai with warfarin or aspirin?

Caution required. Coumarins in Dang Gui can increase bleeding risk. Tell your prescriber and your acupuncturist if you take anticoagulants or antiplatelets.

Should I buy dong quai capsules off the shelf?

Generally no. Single-herb capsules rarely match tailored formula prescribing, and quality varies enormously. A practitioner consultation gives much better and safer results.

To discuss Dang Gui or hormonal balance, contact me or book a consultation at my Wokingham clinic.

Related reading: Blood-building herbs | Chinese herbs for fertility | Dang Gui herb profile

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