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    AdaptogenPreclinical

    Dong Quai Dosage Guide: Protocols, Calculator & Safety

    Everything you need to know about Dong Quai dosing — protocols, safety, and where to buy.

    Dosage Calculator

    Calculate exact dosing for Dong Quai.

    Dosing Protocols

    Beginner

    Beginner Protocol (first-time Dong Quai users, women's health or general tonic interest):

    Critical prerequisite: Before starting Dong Quai, verify you have no absolute contraindications:

    • Not pregnant or planning pregnancy in the next 2-3 months
    • Not breastfeeding
    • Not taking warfarin, DOACs, heparin, or other anticoagulants
    • Not taking daily aspirin or other antiplatelet therapy
    • No bleeding disorder
    • No hormone-sensitive cancer or hormone-sensitive gynecological condition
    • No upcoming elective surgery
    • Not taking multiple other bleeding-risk supplements simultaneously

    Form and dose: Start with a standardized capsule/tablet extract at the lower end of typical dosing:

    • Standardized extract (0.05-0.1% ferulic acid): 300-500mg once daily with breakfast or lunch
    • Traditional dried root decoction: 3-6g dried root in water, simmered 30-45 minutes, consumed as tea (1-2 cups daily)

    Duration: 6-8 week trial period, then assess and reconsider. Dong Quai is not appropriate for indefinite daily use without reason.

    Timing: Morning or midday; avoid evening dosing due to warming/stimulating properties that could disrupt sleep in some users.

    Indication-specific guidance:

    • For menstrual irregularities or mild PMS: Consider taking primarily in follicular phase (days 1-14), pausing during luteal phase (days 15-28). Traditional guidance varies.
    • For general blood tonic / energy support: Daily morning dosing for 6-8 weeks, then reassess.
    • For menopausal symptoms: Evidence is weak for monotherapy; consider alternatives (black cohosh, red clover) or consult TCM practitioner for combination formula.
    • For post-partum recovery (under medical guidance only): Traditional use exists but should be supervised by trained practitioner; not DIY territory.

    Quality selection:

    • Choose products with:
      • Third-party testing certification
      • Clear species verification (Angelica sinensis specifically, not A. archangelica, A. dahurica, or A. acutiloba)
      • Heavy metal testing (particularly important for Chinese herbs)
      • Sulfur-free processing
      • Reputable manufacturer with transparent sourcing
    • Avoid products with:
      • Proprietary blends obscuring Dong Quai content
      • Extreme marketing claims ("hormone replacement alternative," "instant menopause relief")
      • No third-party testing
      • Unknown species or generic "Angelica" labeling
    • Traditional Chinese herbal pharmacies (with TCM practitioner involvement) often have better quality control than mass-market Western supplements

    Baseline assessment:

    • Complete blood count (if interested in blood-tonic use case)
    • If on any cardiovascular medication: consult physician before starting
    • Document baseline symptoms you're targeting for assessment of effect

    Monitoring during use:

    • Watch for bleeding signs: unexpected bruising, gum bleeding, nosebleeds, heavy menstrual flow, blood in urine/stool
    • Watch for photosensitivity: exaggerated sunburn, skin reactions with sun exposure — use sunscreen, protective clothing
    • Document whether target symptoms improve, worsen, or remain unchanged
    • Any severe or unexpected symptom → discontinue and consult physician

    Dosing adjustments:

    • If no effect after 4-6 weeks at 300-500mg, can increase to 500-1000mg
    • If GI side effects, split dosing (250mg AM + 250mg PM) or take with larger meal
    • If sleep disturbance, move all dosing to early morning
    • If bleeding concerns, discontinue

    Cycling:

    • 8 weeks on, 2-4 weeks off is a reasonable pattern
    • Avoid continuous year-round use without breaks

    Decision point at end of 6-8 week trial:

    • Clear benefit with acceptable tolerance → continue with cycling pattern
    • Subtle benefit → consider whether worth cost and monitoring burden
    • No benefit → discontinue and consider alternatives
    • Side effects → discontinue

    When to consult professional:

    • Before starting if on any medications
    • Before starting if any chronic health conditions
    • If symptoms are significant enough to warrant medical attention
    • Consider consultation with licensed TCM practitioner (acupuncturist/herbalist) rather than DIY supplement use, particularly for traditional indications like menstrual disorders or post-partum recovery
    Standard

    Intermediate Protocol (users with prior Dong Quai experience, specific clinical applications):

    Form and dose: Standardized extract 500-1500mg daily in divided doses (AM + PM), or traditional decoction 6-12g dried root daily.

    Duration: 8-12 weeks on / 2-4 weeks off cycling pattern. Use as indicated by clinical goals rather than continuously.

    Indication-specific intermediate protocols:

    For blood deficiency / mild anemia support (classic Dang Gui Bu Xue Tang framework):

    • Dong Quai 500-1000mg daily + Astragalus 2000-4000mg daily (1:5 ratio)
    • Duration: 12 weeks
    • Monitor: CBC with indices, iron studies, B12, folate levels
    • Rule out underlying treatable anemia causes before relying on herbal support

    For menstrual irregularities (Si Wu Tang or modified blood tonic framework):

    • Consult TCM practitioner for proper formula
    • If self-directed: Dong Quai 500-1000mg + white peony 500-1000mg daily
    • Cycle follicular phase emphasis (days 1-14 of cycle)
    • Track menstrual calendar (flow, duration, symptoms)
    • Duration: 3-6 months for effect assessment

    For PMS with blood-deficiency component (Xiao Yao San framework):

    For menopausal support (considering weak monotherapy evidence):

    • Consider Black Cohosh 40-80mg standardized as primary agent (stronger evidence)
    • Add Dong Quai 500-750mg as adjunct for blood-building framework
    • Consider combination with Red Clover 40-80mg isoflavones
    • Duration: 12 weeks, then reassess
    • Monitor: menopausal symptom scores, lipid profile, bone density if prolonged use

    For post-partum recovery (with practitioner guidance):

    • Traditional Chinese post-partum protocols use Dong Quai in formulas like Sheng Hua Tang
    • NOT appropriate for self-directed supplementation
    • Consult licensed TCM practitioner or integrative medicine specialist

    Comprehensive women's hormonal health stack:

    Monitoring schedule:

    • Baseline: CBC, INR, liver function tests, hormone panel if relevant
    • Every 8-12 weeks: Repeat CBC, LFTs
    • Monthly: Menstrual calendar tracking
    • As needed: Blood pressure (given vasodilator effects)
    • Pre-operative: Discontinue 2+ weeks before any surgery

    Quality sourcing (intermediate considerations):

    • Consider traditional Chinese herbal pharmacies that stock raw dried roots with practitioner consultation
    • For capsule products: prefer brands with published batch testing
    • Check for sulfur dioxide testing (common preservative in Chinese herbs)
    • Verify Angelica sinensis species (not substitutes)
    • Consider decoction preparation for higher doses (traditional delivery)

    Interaction management (intermediate):

    • Active interaction monitoring for any medication changes
    • Avoid stacking multiple hormonally-active herbs
    • Avoid stacking multiple bleeding-risk agents
    • Pre-procedure discontinuation for any dental work involving bleeding risk

    When to escalate to practitioner consultation:

    • Symptoms not responding to self-directed Dong Quai use after 12 weeks
    • Any unusual symptoms during use
    • Complex clinical situations (multiple conditions, multiple medications)
    • Considering comprehensive TCM combination formulas
    • Post-partum or pregnancy-related indications
    • Suspected gynecological pathology needing medical workup
    Advanced

    Advanced Protocol (experienced users, complex clinical situations, integration with TCM practice):

    Important framing: "Advanced" Dong Quai use should almost always involve collaboration with a licensed Traditional Chinese Medicine practitioner (acupuncturist/herbalist in the US; Chinese Medicine doctor in appropriate jurisdictions) or integrative medicine physician with herbal expertise. Dong Quai used as a high-dose monotherapy Western supplement reaches a quickly-diminishing return zone; used within traditional combination formulas with proper pattern differentiation, its appropriate role can be optimized.

    Traditional decoction preparation (preferred form for advanced use):

    • Dong Quai 9-15g dried root daily as part of customized formula
    • Decoction preparation: simmer in water 30-60 minutes, typically two-batch extraction combined
    • Formula-based: single-herb use is rare in traditional practice; advanced use should be within practitioner-designed formulas

    Advanced indication-specific protocols (practitioner guidance essential):

    For infertility support (qi-blood deficiency pattern):

    • Comprehensive evaluation first to rule out treatable infertility causes
    • Formula examples: Si Wu Tang modified, Ba Zhen Tang, practitioner-tailored
    • Typical Dong Quai dose: 9-12g within formula
    • Duration: 3-6 menstrual cycles minimum
    • Concurrent evaluation of hormonal, structural, and lifestyle factors
    • NOT a substitute for reproductive endocrinology evaluation

    For perimenopausal/menopausal transitions (complex patterns):

    • TCM differential diagnosis (kidney yin deficiency, kidney yang deficiency, liver-qi stagnation, blood deficiency, or combinations)
    • Formula tailored to pattern presentation
    • Typical duration: 6+ months for complete transition support
    • Concurrent Western evaluation for bone density, cardiovascular risk, genitourinary symptoms as appropriate

    For post-partum recovery (Zuo Yuezi / "sitting the month"):

    • Traditional 30-day post-partum care protocols involving dietary and herbal support
    • Sheng Hua Tang and related formulas containing Dong Quai
    • Practitioner supervision essential
    • Cultural context important (traditional zuo yuezi practices involve many components)

    For chronic fatigue and recovery from illness (qi-blood deficiency patterns):

    • Dang Gui Bu Xue Tang or elaborations
    • Long-term pulsed therapy (6-12 weeks on, breaks, repeat)
    • Concurrent Western evaluation for treatable fatigue causes

    Comprehensive women's health multi-herb integration:

    Advanced monitoring:

    • Quarterly: CBC, LFTs, comprehensive metabolic panel, iron studies, hormone panel, thyroid panel
    • Annually: Bone density (in perimenopausal/menopausal users), comprehensive cardiovascular assessment
    • Menstrual cycle tracking with detailed symptom logs
    • Blood pressure monitoring
    • Coagulation testing (INR/PT/PTT) if any bleeding concerns

    Integration with Western medical care:

    • All herbs disclosed to all physicians
    • Coordination between TCM practitioner and Western physicians
    • Pharmacist consultation for drug-herb interaction review
    • Pre-operative planning with 2+ week herb discontinuation

    Quality control at advanced level:

    • Relationship with specific Chinese herbal supplier with documented quality control
    • DNA authentication for high-value formulas
    • Batch-to-batch consistency assessment
    • Consider classical decoction preparation versus granule/extract products
    • Traditional processing methods (wine-fried Dong Quai for specific indications versus plain dried Dong Quai)

    Cost considerations:

    • Advanced TCM herbal use is not cheap — quality formulas can run $100-300+ per month
    • Practitioner consultation fees
    • Monitoring lab costs
    • Budget accordingly; cheap Dong Quai is almost always inferior

    Red flags warranting protocol discontinuation:

    • Any bleeding event
    • INR elevation beyond target
    • Unexpected menstrual changes (prolonged or very heavy bleeding)
    • Signs of hepatic dysfunction
    • Development of hormone-sensitive condition
    • New cardiovascular symptoms
    • Allergic reactions
    • Pregnancy

    Long-term perspective: Dong Quai at the advanced level is best conceptualized as a tool within comprehensive integrative care, not as a primary intervention. It complements rather than replaces: (1) appropriate Western medical evaluation and care for specific conditions, (2) lifestyle optimization (sleep, nutrition, exercise, stress management), (3) targeted nutritional support (iron if deficient, B12, folate, vitamin D), (4) other traditional medicine modalities (acupuncture, qigong). Users who find Dong Quai valuable at this level typically integrate it into broader health frameworks rather than treating it as a single-herb intervention.

    Commonly Stacked With

    Dong Quai is classically used as a component of traditional Chinese medicine (TCM) combination formulas, not as a standalone supplement. Understanding Dong Quai's stacking patterns within its traditional context illuminates both the traditional use and the modern supplementation options.

    Classical TCM combinations (the traditional context):

    • Si Wu Tang ("Four Substances Decoction"): Dong Quai + white peony (Paeonia lactiflora) + ligusticum (Ligusticum chuanxiong) + rehmannia (Rehmannia glutinosa). The canonical blood-tonifying formula of TCM, used for blood deficiency patterns (pallor, menstrual irregularities, dizziness). The formula uses complementary herbs to enhance blood-building while balancing Dong Quai's warming and moving qualities.

    • Dang Gui Bu Xue Tang ("Dong Quai Blood Tonic Decoction"): Dong Quai + astragalus (Huang Qi) in 1:5 ratio (astragalus as the larger proportion). A famous simple-formula for qi and blood tonification; used for fatigue, post-partum recovery, and chronic depletion. This is one of Dong Quai's most studied combinations and has human clinical evidence for anemia and recovery support.

    • Gui Pi Tang ("Restore the Spleen Decoction"): Complex formula containing Dong Quai along with ginseng, astragalus, white atractylodes, licorice, longan aril, polygala, ziziphus seed, and others. Used for qi-blood deficiency with heart-spleen disharmony.

    • Xiao Yao San ("Free and Easy Wanderer Powder"): Dong Quai + bupleurum + white peony + white atractylodes + poria + licorice + mint + ginger. Used for liver-qi stagnation with blood deficiency; modern applications include PMS, depression with hormonal component, and stress-related digestive symptoms.

    • Ba Zhen Tang ("Eight Treasures Decoction"): Combines Si Wu Tang (blood tonification) with Si Jun Zi Tang (qi tonification: ginseng, white atractylodes, poria, licorice) for comprehensive qi-blood deficiency.

    Modern Western-style stacks:

    Women's hormonal and menopausal support:

    • Dong Quai + Black Cohosh + Red Clover: Traditional Western herbalist combination for menopausal support. Black Cohosh has the strongest evidence for hot flashes; Red Clover provides isoflavones; Dong Quai adds traditional Chinese herbalist framing. Better evidence-supported than Dong Quai monotherapy.

    • Dong Quai + Chasteberry (Vitex): Vitex for luteal phase support and cycle regulation; Dong Quai for blood-building aspect. Used in PMS and cycle irregularity.

    • Dong Quai + soy isoflavones: Combining traditional Chinese blood tonic with phytoestrogen support for menopause.

    • Dong Quai + Maca: Combining Chinese "female ginseng" with Peruvian maca — both traditional women's health herbs from different traditions.

    Blood-building and anemia support:

    • Dong Quai + Astragalus (classic Dang Gui Bu Xue Tang): Best-studied combination; moderate evidence for mild anemia and recovery.

    • Dong Quai + iron supplementation: For iron-deficiency anemia, iron is the essential treatment; Dong Quai as adjunct for traditional blood-building theory.

    • Dong Quai + Vitamin B12 + Folate: Nutritional support for hematopoiesis.

    • Dong Quai + Ginseng (Panax) + Royal Jelly: Traditional tonic combination for general vitality and recovery.

    Circulatory and blood stasis support:

    • Dong Quai + Salvia miltiorrhiza (Dan Shen) + Ligusticum: Chinese herbal circulatory support combination; traditional use for coronary heart disease and peripheral circulatory issues. Bleeding risk enhanced — avoid with anticoagulants.

    What to AVOID combining with Dong Quai:

    • Pharmaceutical anticoagulants (warfarin, DOACs, heparin): Strong contraindication given bleeding risk documented in case reports.

    • Antiplatelet agents: Aspirin, clopidogrel, other antiplatelets — additive bleeding risk.

    • Other bleeding-risk herbs: Ginkgo biloba, garlic at high doses, nattokinase, turmeric/curcumin at high pharmaceutical doses, vitamin E at high doses. Avoid stacking multiple bleeding-risk agents.

    • Multiple hormonally-active herbs simultaneously: Rather than taking Dong Quai + black cohosh + red clover + vitex + soy isoflavones + DHEA all at once, select one or two and assess response before adding more.

    • Hepatotoxic medications or herbs: Given coumarin content and CYP effects, avoid stacking with hepatotoxic agents.

    Timing and administration considerations:

    • With food: Reduces GI side effects.

    • Consistent timing: Morning or divided doses (AM + PM); Dong Quai's warming nature may affect sleep in some users if taken evening.

    • Cycle timing in reproductive-age women: Some practitioners recommend taking Dong Quai primarily in the follicular phase (days 1-14) of the menstrual cycle rather than the luteal phase, reflecting traditional use patterns. Research evidence for specific cycle-phase dosing is limited.

    • Decoction vs capsule: Traditional preparation involves decoction (boiling 6-15g root in water for 30-60 minutes); modern capsules/tablets are more convenient but may have different bioactive profiles.

    • Duration: Traditional TCM use is typically for specific clinical conditions under practitioner guidance rather than continuous daily supplementation. Long-term unmonitored use is not well-studied.

    Integration with medical care:

    Patients with complex medical conditions should:

    • Inform all physicians of Dong Quai use
    • Coordinate with primary care about any medication interactions
    • Consult with TCM practitioner (licensed acupuncturist/herbalist) for traditional protocol guidance
    • Monitor CBC, INR (if relevant), and LFTs periodically
    • Discontinue before surgeries and certain procedures

    Bottom line for stacking: Dong Quai's strongest use case is within traditional Chinese herbal medicine combination formulas, ideally under practitioner guidance. For modern Western single-herb supplementation, Dong Quai's combination with astragalus (Dang Gui Bu Xue Tang) has the strongest evidence base; combinations targeting menopausal symptoms have mixed evidence; general "women's health tonic" use is traditional but not rigorously evidence-supported. Always prioritize the bleeding risk warning when considering Dong Quai stacks.

    Side Effects & Safety

    **Dong Quai is generally well-tolerated at traditional doses (3-15g dried root equivalent daily) and typical supplement doses (500-2000mg extract daily), but several safety concerns require attention** — most importantly bleeding risk, which is the dominant safety issue for this herb. **Common mild side effects:** - **Gastrointestinal symptoms**: Nausea, stomach upset, cramping, diarrhea, and occasional appetite changes. Dong Quai has a warming energetic nature in TCM terms; some users find it gastrically irritating particularly on empty stomach. Taking with food reduces GI effects. - **Mild sweating or feeling warm**: Consistent with Dong Quai's classification as a warming herb; typically modest and tolerable. - **Mild headache**: Occasional; usually resolves with continued use or dose reduction. - **Changes in blood pressure**: Generally modest hypotension is possible given vasodilatory effects; clinically significant blood pressure changes are uncommon at normal doses. - **Mild increase in menstrual flow**: Consistent with traditional use — some users note heavier or longer menstrual bleeding. Clinically significant menorrhagia warrants discontinuation and medical evaluation. **Significant adverse effects:** - **Increased bleeding risk** (the most important safety issue): Dong Quai's anticoagulant and antiplatelet effects can cause clinically significant bleeding, particularly when combined with pharmaceutical anticoagulants (warfarin, apixaban, rivaroxaban, dabigatran, edoxaban), antiplatelet agents (aspirin, clopidogrel, ticagrelor, prasugrel), NSAIDs in chronic high doses, or other bleeding-risk-elevating substances. Case reports document INR elevations and bleeding events with warfarin + Dong Quai combinations. Patients on any anticoagulant therapy should avoid Dong Quai; patients considering Dong Quai use should discuss with their physician if on any cardiovascular or antiplatelet medication. - **Photosensitivity reactions**: The coumarin content (particularly furanocoumarins like psoralen, angelicin, bergapten) can cause photosensitization — exaggerated sunburn reactions, phototoxic dermatitis, or pigmentation changes with sun exposure during Dong Quai use. Users should practice sun protection (sunscreen, protective clothing) particularly at higher doses or with outdoor activities. - **Potential uterine stimulation**: Case-level concerns about uterine stimulant effects have led to pregnancy contraindication. The smooth muscle effects are complex (both stimulation and relaxation depending on context), making a conservative "avoid in pregnancy" recommendation prudent. - **Allergic and contact dermatitis reactions**: Apiaceae family allergy (shared with celery, carrot, parsley, fennel) can manifest as reactions to Dong Quai. Rare but documented. - **Hormone-sensitive condition concerns**: Despite the Hirata 1997 data showing no clear estrogenic effects, the ambiguity in the literature about Dong Quai's estrogenicity warrants caution in hormone-sensitive cancers (breast, ovarian, endometrial), endometriosis, uterine fibroids, and similar conditions. Precautionary avoidance is reasonable. **Population-specific concerns:** - **Pregnancy**: Contraindicated. Uterine stimulant concerns and coumarin content make pregnancy use inadvisable. - **Lactation**: Generally not recommended. Safety data in nursing is limited; some TCM practitioners use Dong Quai in post-partum recovery formulas but under supervision; unsupervised supplement use is not recommended during lactation. - **Children**: Not recommended due to limited pediatric safety data. - **Pre-surgical patients**: Discontinue at least 2 weeks before elective surgery given bleeding risk. - **Bleeding disorders** (hemophilia, von Willebrand disease, thrombocytopenia): Avoid or use only under hematologist supervision. - **Peptic ulcer disease, gastritis, IBD**: Caution due to gastrointestinal and bleeding effects. - **Hormone-sensitive conditions**: Avoid as precaution. - **Liver disease**: Caution given potential hepatic effects of coumarins and CYP enzyme interactions. - **Thyroid disorders**: Limited data but caution warranted given general hormonal interaction concerns. **Drug interactions (major):** - **Warfarin, coumarin anticoagulants**: Major interaction; potentiates anticoagulant effect; documented case reports of INR elevation and bleeding. Avoid combination. - **Direct oral anticoagulants (DOACs)**: Apixaban, rivaroxaban, dabigatran, edoxaban. Theoretically concerning; avoid combination. - **Antiplatelet agents**: Aspirin, clopidogrel, prasugrel, ticagrelor. Potential additive bleeding risk. - **NSAIDs**: Chronic or high-dose NSAIDs combined with Dong Quai may increase bleeding risk. - **Heparin and low-molecular-weight heparins**: Additive anticoagulant effect; avoid. - **Selective serotonin reuptake inhibitors (SSRIs)**: Some SSRIs have antiplatelet effects; combination with Dong Quai theoretically increases bleeding risk. **Drug interactions (moderate concern):** - **Hormonal contraceptives**: Theoretical interference with contraceptive efficacy (limited data); unclear clinical significance. - **Hormone replacement therapy (HRT)**: Theoretical interactions given Dong Quai's traditional "female ginseng" framing; limited data. - **CYP3A4 substrates**: Possible interactions through cytochrome P450 modulation; check specific medications with pharmacist. - **Antihypertensive medications**: Possible additive hypotensive effects; monitor blood pressure. - **Thyroid medications**: Limited data but caution warranted. **Herb-herb interactions:** - **Other antiplatelet/anticoagulant herbs**: [Ginkgo biloba](/compound/ginkgo-biloba), garlic at high doses, [fish oil](/compound/omega-3) at high doses, [nattokinase](/compound/nattokinase), turmeric/curcumin at high doses, [vitamin E](/compound/vitamin-e) at high doses. Avoid stacking multiple bleeding-risk herbs. - **Hormonally-active herbs**: [Black cohosh](/compound/black-cohosh), [red clover](/compound/red-clover), [chasteberry (Vitex)](/compound/chasteberry-vitex), soy isoflavones. Consider one at a time rather than combining. - **Sedative/hypnotic herbs**: [Valerian](/compound/valerian), [kava](/compound/kava), [passionflower](/compound/passionflower). No specific interaction documented but prudent to monitor. **Quality and contamination concerns:** - **Heavy metal contamination**: Chinese herbal products have been subject to heavy metal contamination concerns; prefer products with documented heavy metal testing. - **Species substitution**: Dong Quai can be substituted with other *Angelica* species (*A. archangelica*, *A. dahurica*, *A. acutiloba* — Japanese dong quai, different properties) in low-quality products. DNA authentication or microscopy preferred. - **Sulfur dioxide processing**: Some Chinese herb suppliers use sulfur dioxide for preservation; sensitive individuals may react. Prefer non-sulfured products. - **Adulteration with pharmaceutical agents**: Less common than for testosterone-marketed herbs but possible; third-party testing helps. **Monitoring recommendations:** - Baseline: Complete blood count (CBC), INR if on any anticoagulant or with bleeding history, liver function tests - During use: Monitor for bleeding signs (excessive bruising, gum bleeding, nosebleeds, heavy menstrual bleeding, blood in urine or stool) - Anticoagulated patients: INR checks more frequently than usual when starting, stopping, or changing Dong Quai use - Before surgery: Discontinue at least 2 weeks prior - Long-term use: Periodic CBC and LFTs reasonable **When to discontinue immediately:** - Unexpected bleeding or bruising - Significant INR elevation (in warfarin users) - Signs of allergic reaction (rash, angioedema, anaphylaxis) - Severe GI symptoms - Photosensitivity reactions - Pregnancy discovery - Before any surgical procedure

    Contraindications

    **Dong Quai is contraindicated in multiple important clinical situations**, with bleeding risk being the dominant safety issue. The following contraindications and cautions should be carefully observed: **Absolute contraindications**: - **Pregnancy**: Contraindicated. Traditional TCM classifies Dong Quai as potentially abortifacient; smooth muscle effects on uterus are context-dependent but conservative avoidance is appropriate. Discontinue immediately if pregnancy is discovered; avoid in all trimesters. - **Lactation**: Generally contraindicated for self-directed use. Traditional post-partum formulas contain Dong Quai but are practitioner-supervised; unsupervised supplement use during breastfeeding is not recommended. - **Current use of pharmaceutical anticoagulants**: Warfarin (coumarin anticoagulant — direct additive effect), direct oral anticoagulants (apixaban, rivaroxaban, dabigatran, edoxaban), heparin, low-molecular-weight heparins, fondaparinux. Strong contraindication given case-report-documented bleeding risk. - **Bleeding disorders**: Hemophilia, von Willebrand disease, platelet function disorders, thrombocytopenia, hemorrhagic conditions. Strong contraindication. - **Active bleeding**: Do not use if actively bleeding from any source (GI bleeding, gynecological bleeding of uncertain cause, post-surgical bleeding, etc.). - **Pre-surgical period**: Discontinue at least 2 weeks before any elective surgery; 2-4 weeks preferred for major surgery or procedures with high bleeding risk. - **Hormone-sensitive cancers (active)**: Breast cancer (particularly ER+), ovarian cancer, endometrial cancer, hormone-sensitive prostate cancer in men. Despite Dong Quai's estrogenicity being controversial and probably weak, precautionary avoidance is appropriate in active disease. **Strong cautions (avoid or use only with physician supervision)**: - **History of hormone-sensitive cancer**: Even in remission, caution warranted. - **Chronic antiplatelet therapy**: Daily aspirin, clopidogrel, prasugrel, ticagrelor. Increased bleeding risk; physician consultation before use. - **Chronic NSAID use**: Particularly at higher doses or in users with other bleeding risk factors. - **Recent surgery or injury**: Wait until fully healed before considering use. - **Peptic ulcer disease**: Avoid due to GI irritation and bleeding risk. - **Inflammatory bowel disease (active)**: Caution due to potential GI effects. - **Liver disease**: Caution due to potential CYP enzyme interactions and coumarin hepatic effects. - **Thyroid disorders**: Limited data; physician coordination recommended. - **Diabetes**: Monitor blood glucose; possible modest effects. - **Hypertension or hypotension**: Monitor blood pressure given vasodilatory effects. - **Uterine fibroids, endometriosis, or other hormone-sensitive gynecological conditions**: Precautionary avoidance given theoretical hormonal effects. **Drug interactions (major)**: - **Warfarin**: Well-documented case reports of INR elevation and bleeding; strong contraindication - **Direct oral anticoagulants**: Theoretical additive effect; avoid - **Heparin and LMWH**: Additive anticoagulant effect; avoid - **Antiplatelet agents**: Aspirin, clopidogrel, etc.; additive bleeding risk **Drug interactions (moderate)**: - **NSAIDs** (ibuprofen, naproxen, celecoxib, etc.): Particularly chronic or high-dose use - **SSRIs**: Sertraline, fluoxetine, paroxetine, etc. — some antiplatelet effect from SSRIs, additive with Dong Quai - **SNRIs**: Venlafaxine, duloxetine - **Hormonal contraceptives**: Theoretical interference; data unclear - **Hormone replacement therapy**: Theoretical additive or competitive effects - **Antihypertensive medications**: Monitor blood pressure - **Thyroid medications**: Possible interactions; coordinate - **CYP3A4 substrates**: Some medications metabolized through CYP3A4; consult pharmacist - **CYP2C9 substrates**: Similar caution **Herb-herb interactions**: - **Other anticoagulant/antiplatelet herbs**: Avoid stacking - [Ginkgo biloba](/compound/ginkgo-biloba) — antiplatelet effects - Garlic at high doses - [Fish oil](/compound/omega-3) at high doses (>3g/day EPA+DHA) - [Nattokinase](/compound/nattokinase) - Turmeric/curcumin at high pharmaceutical doses - [Vitamin E](/compound/vitamin-e) at high doses (>400 IU daily long-term) - [Salvia miltiorrhiza (Dan Shen)](/compound/salvia-miltiorrhiza) - Feverfew at high doses - Ginger at very high doses (culinary doses safe) - [Boswellia](/compound/boswellia) at high doses - **Multiple hormonally-active herbs**: [Black cohosh](/compound/black-cohosh), [red clover](/compound/red-clover), soy isoflavones, [chasteberry (Vitex)](/compound/chasteberry-vitex) — consider one at a time rather than stacking all - **Hepatotoxic herbs**: [Kava](/compound/kava), [comfrey](/compound/comfrey), pennyroyal, chaparral — avoid stacking with Dong Quai given coumarin content - **Photosensitizing herbs**: [St. John's Wort](/compound/st-johns-wort), other coumarin-rich herbs — additive photosensitivity risk **Population-specific contraindications**: - **Children and adolescents**: Not recommended due to limited pediatric data and hormonal concerns - **Elderly patients on polypharmacy**: Increased interaction and bleeding risks; cautious approach - **Patients with complex cardiovascular disease**: Coordinate with cardiologist - **Patients with coagulation monitoring requirements**: If use is considered despite other cautions, more frequent INR/coagulation monitoring is essential - **Immunocompromised patients**: Limited data on immune interactions; caution advised - **Patients planning conception in next 2-3 months**: Discontinue to allow washout before conception attempts **Monitoring during use**: - Watch for bleeding signs: unexpected bruising, gum bleeding, nosebleeds, heavy/prolonged menstrual flow, blood in urine/stool/sputum, melena - Watch for photosensitivity: exaggerated sunburn, skin reactions with sun exposure - Monitor menstrual patterns (for reproductive-age women) - Blood pressure (given vasodilator effects) - Baseline and periodic CBC - INR if on any interacting medication **When to discontinue immediately**: - Any bleeding event requiring medical attention - Unusual/prolonged bruising - Pregnancy discovery - Before any surgery or invasive procedure - New diagnosis of any contraindicating condition - Any significant allergic reaction - Severe GI symptoms - Photosensitivity reactions - Any adverse effect disrupting daily life **Bottom line**: Dong Quai's safety profile is dominated by bleeding risk — the combination of coumarin content, antiplatelet effects, and documented case reports of INR elevation with warfarin co-administration make this the central safety concern. Users with any condition requiring anticoagulation, any bleeding disorder, any surgical planning, or who are pregnant or potentially pregnant should not use Dong Quai. For healthy users without these contraindications, Dong Quai at modest doses (500-1000mg standardized extract daily) is generally well-tolerated, but the herb is best used within traditional TCM combination frameworks under practitioner guidance rather than as a standalone Western supplement.

    Check interactions with the Interaction Checker →

    Additional Notes

    Dong Quai dosing varies widely by preparation form, indication, and traditional vs. modern context:

    Standardized extract (modern Western capsule/tablet):

    • Low-dose tonic: 300-500mg daily
    • Standard dose: 500-1000mg daily
    • Higher dose: 1000-2000mg daily
    • Standardization typically to ferulic acid (0.05-0.1%) or occasionally to ligustilide content
    • Extract ratios commonly 4:1 to 10:1 from dried root
    • Take with food to reduce GI effects

    Traditional dried root (for decoction):

    • Traditional daily dose: 6-15g dried root, typically as part of combination formula
    • As single-herb decoction: 6-9g daily
    • High-dose traditional use: up to 30g daily (generally only with practitioner guidance)
    • Preparation: simmer in water 30-60 minutes, typically two extractions combined
    • Consumption: divided into 2-3 doses throughout the day

    Tincture (alcohol extract):

    • 1:1 to 1:5 tincture: 2-5ml 2-3 times daily
    • Less common preparation in modern Western use

    Powder (ground dried root):

    • 1-3g daily, mixed into warm water, tea, or food
    • Less concentrated than extracts; larger volume required

    Dose by indication (where specific guidance exists):

    • Blood tonification (Dang Gui Bu Xue Tang ratio): Dong Quai 6g + Astragalus 30g daily as decoction, or proportional extract equivalent
    • Menstrual regulation: Typically 6-9g daily in formula, cycle-timed
    • Menopausal monotherapy (weak evidence): 500-2000mg daily of standardized extract
    • PMS adjunct: 500-1000mg daily, focused on luteal phase
    • Dysmenorrhea (traditional): 9-15g daily starting 1 week before expected menses, continuing through period

    Form comparisons (approximate equivalents):

    • 1g dried root ≈ 100-250mg standardized extract (varies by extract ratio)
    • 1g dried root ≈ 2-5ml 1:5 tincture
    • Decoction extracts volatile oils somewhat less effectively than alcohol extraction, so aqueous and alcohol preparations may have different activity profiles

    Timing:

    • Morning or midday: Preferred due to warming/activating nature
    • Avoid evening: May interfere with sleep in some users
    • With food: Essential to reduce GI side effects
    • Consistent daily timing: Helps assess effects
    • Cycle-timed in reproductive-age women: Some practitioners recommend follicular phase (days 1-14) emphasis, though evidence for specific timing is limited

    Duration considerations:

    • Short course (2-4 weeks): For acute indications like dysmenorrhea support around menstruation
    • Medium course (6-12 weeks): For menopausal symptoms, blood tonification, recovery support
    • Long-term use (>3 months continuous): Not well-studied; consider cycling or practitioner consultation
    • Avoid year-round continuous use without breaks: 8-12 weeks on, 2-4 weeks off is reasonable

    Quality indicators for dosing:

    • Species-verified Angelica sinensis (not substitutes)
    • Standardized content specified (ferulic acid ≥0.05% is common minimum)
    • Third-party testing confirming content
    • Reputable manufacturer
    • Non-sulfured processing preferred

    Dose adjustments:

    • GI intolerance: Split dose, take with larger meal, consider decoction instead of capsule
    • Feeling too warm: Reduce dose, combine with cooling herbs (TCM principle)
    • Sleep disturbance: Move to morning-only dosing
    • Inadequate effect after 6+ weeks at standard dose: Consider practitioner consultation rather than escalating dose alone

    What NOT to do with Dong Quai dosing:

    • Don't exceed 2000mg/day standardized extract without practitioner guidance
    • Don't take for indefinite durations without periodic breaks
    • Don't take during pregnancy at any dose
    • Don't take while on anticoagulants at any dose without medical supervision
    • Don't combine with multiple other bleeding-risk agents
    • Don't use as substitute for evaluation of significant symptoms

    Special dosing considerations:

    • Wine-fried Dong Quai (Jiu Dang Gui): Traditional preparation where Dong Quai is fried with yellow rice wine; used for enhanced blood-invigorating effects. Same dosing as regular Dong Quai.
    • Dong Quai Tail (Dang Gui Wei): The end-section of the root, traditionally considered more active for blood-invigorating effects; used in specific traditional indications.
    • Dong Quai Body (Dang Gui Shen): The main middle section, considered balanced blood-tonifying and blood-invigorating.
    • Dong Quai Head (Dang Gui Tou): The top/upper section, considered more tonifying and less invigorating.

    These subtle traditional distinctions are not typically captured by Western supplement products but may be relevant when sourcing from traditional Chinese herbal pharmacies.

    Frequently Asked Questions

    What is the recommended Dong Quai dosage?

    Dosage for Dong Quai varies by protocol. Consult a qualified healthcare provider.

    How often should I take Dong Quai?

    Administration frequency depends on the specific protocol. Consult current research literature.

    Does Dong Quai need to be cycled?

    Cycling requirements depend on the protocol. Follow established research guidelines.

    What are Dong Quai side effects?

    **Dong Quai is generally well-tolerated at traditional doses (3-15g dried root equivalent daily) and typical supplement doses (500-2000mg extract daily), but several safety concerns require attention** — most importantly bleeding risk, which is the dominant safety issue for this herb. **Common mild side effects:** - **Gastrointestinal symptoms**: Nausea, stomach upset, cramping, diarrhea, and occasional appetite changes. Dong Quai has a warming energetic nature in TCM terms; some users find it gastrically irritating particularly on empty stomach. Taking with food reduces GI effects. - **Mild sweating or feeling warm**: Consistent with Dong Quai's classification as a warming herb; typically modest and tolerable. - **Mild headache**: Occasional; usually resolves with continued use or dose reduction. - **Changes in blood pressure**: Generally modest hypotension is possible given vasodilatory effects; clinically significant blood pressure changes are uncommon at normal doses. - **Mild increase in menstrual flow**: Consistent with traditional use — some users note heavier or longer menstrual bleeding. Clinically significant menorrhagia warrants discontinuation and medical evaluation. **Significant adverse effects:** - **Increased bleeding risk** (the most important safety issue): Dong Quai's anticoagulant and antiplatelet effects can cause clinically significant bleeding, particularly when combined with pharmaceutical anticoagulants (warfarin, apixaban, rivaroxaban, dabigatran, edoxaban), antiplatelet agents (aspirin, clopidogrel, ticagrelor, prasugrel), NSAIDs in chronic high doses, or other bleeding-risk-elevating substances. Case reports document INR elevations and bleeding events with warfarin + Dong Quai combinations. Patients on any anticoagulant therapy should avoid Dong Quai; patients considering Dong Quai use should discuss with their physician if on any cardiovascular or antiplatelet medication. - **Photosensitivity reactions**: The coumarin content (particularly furanocoumarins like psoralen, angelicin, bergapten) can cause photosensitization — exaggerated sunburn reactions, phototoxic dermatitis, or pigmentation changes with sun exposure during Dong Quai use. Users should practice sun protection (sunscreen, protective clothing) particularly at higher doses or with outdoor activities. - **Potential uterine stimulation**: Case-level concerns about uterine stimulant effects have led to pregnancy contraindication. The smooth muscle effects are complex (both stimulation and relaxation depending on context), making a conservative "avoid in pregnancy" recommendation prudent. - **Allergic and contact dermatitis reactions**: Apiaceae family allergy (shared with celery, carrot, parsley, fennel) can manifest as reactions to Dong Quai. Rare but documented. - **Hormone-sensitive condition concerns**: Despite the Hirata 1997 data showing no clear estrogenic effects, the ambiguity in the literature about Dong Quai's estrogenicity warrants caution in hormone-sensitive cancers (breast, ovarian, endometrial), endometriosis, uterine fibroids, and similar conditions. Precautionary avoidance is reasonable. **Population-specific concerns:** - **Pregnancy**: Contraindicated. Uterine stimulant concerns and coumarin content make pregnancy use inadvisable. - **Lactation**: Generally not recommended. Safety data in nursing is limited; some TCM practitioners use Dong Quai in post-partum recovery formulas but under supervision; unsupervised supplement use is not recommended during lactation. - **Children**: Not recommended due to limited pediatric safety data. - **Pre-surgical patients**: Discontinue at least 2 weeks before elective surgery given bleeding risk. - **Bleeding disorders** (hemophilia, von Willebrand disease, thrombocytopenia): Avoid or use only under hematologist supervision. - **Peptic ulcer disease, gastritis, IBD**: Caution due to gastrointestinal and bleeding effects. - **Hormone-sensitive conditions**: Avoid as precaution. - **Liver disease**: Caution given potential hepatic effects of coumarins and CYP enzyme interactions. - **Thyroid disorders**: Limited data but caution warranted given general hormonal interaction concerns. **Drug interactions (major):** - **Warfarin, coumarin anticoagulants**: Major interaction; potentiates anticoagulant effect; documented case reports of INR elevation and bleeding. Avoid combination. - **Direct oral anticoagulants (DOACs)**: Apixaban, rivaroxaban, dabigatran, edoxaban. Theoretically concerning; avoid combination. - **Antiplatelet agents**: Aspirin, clopidogrel, prasugrel, ticagrelor. Potential additive bleeding risk. - **NSAIDs**: Chronic or high-dose NSAIDs combined with Dong Quai may increase bleeding risk. - **Heparin and low-molecular-weight heparins**: Additive anticoagulant effect; avoid. - **Selective serotonin reuptake inhibitors (SSRIs)**: Some SSRIs have antiplatelet effects; combination with Dong Quai theoretically increases bleeding risk. **Drug interactions (moderate concern):** - **Hormonal contraceptives**: Theoretical interference with contraceptive efficacy (limited data); unclear clinical significance. - **Hormone replacement therapy (HRT)**: Theoretical interactions given Dong Quai's traditional "female ginseng" framing; limited data. - **CYP3A4 substrates**: Possible interactions through cytochrome P450 modulation; check specific medications with pharmacist. - **Antihypertensive medications**: Possible additive hypotensive effects; monitor blood pressure. - **Thyroid medications**: Limited data but caution warranted. **Herb-herb interactions:** - **Other antiplatelet/anticoagulant herbs**: [Ginkgo biloba](/compound/ginkgo-biloba), garlic at high doses, [fish oil](/compound/omega-3) at high doses, [nattokinase](/compound/nattokinase), turmeric/curcumin at high doses, [vitamin E](/compound/vitamin-e) at high doses. Avoid stacking multiple bleeding-risk herbs. - **Hormonally-active herbs**: [Black cohosh](/compound/black-cohosh), [red clover](/compound/red-clover), [chasteberry (Vitex)](/compound/chasteberry-vitex), soy isoflavones. Consider one at a time rather than combining. - **Sedative/hypnotic herbs**: [Valerian](/compound/valerian), [kava](/compound/kava), [passionflower](/compound/passionflower). No specific interaction documented but prudent to monitor. **Quality and contamination concerns:** - **Heavy metal contamination**: Chinese herbal products have been subject to heavy metal contamination concerns; prefer products with documented heavy metal testing. - **Species substitution**: Dong Quai can be substituted with other *Angelica* species (*A. archangelica*, *A. dahurica*, *A. acutiloba* — Japanese dong quai, different properties) in low-quality products. DNA authentication or microscopy preferred. - **Sulfur dioxide processing**: Some Chinese herb suppliers use sulfur dioxide for preservation; sensitive individuals may react. Prefer non-sulfured products. - **Adulteration with pharmaceutical agents**: Less common than for testosterone-marketed herbs but possible; third-party testing helps. **Monitoring recommendations:** - Baseline: Complete blood count (CBC), INR if on any anticoagulant or with bleeding history, liver function tests - During use: Monitor for bleeding signs (excessive bruising, gum bleeding, nosebleeds, heavy menstrual bleeding, blood in urine or stool) - Anticoagulated patients: INR checks more frequently than usual when starting, stopping, or changing Dong Quai use - Before surgery: Discontinue at least 2 weeks prior - Long-term use: Periodic CBC and LFTs reasonable **When to discontinue immediately:** - Unexpected bleeding or bruising - Significant INR elevation (in warfarin users) - Signs of allergic reaction (rash, angioedema, anaphylaxis) - Severe GI symptoms - Photosensitivity reactions - Pregnancy discovery - Before any surgical procedure

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