Di Ding Dang Gui Tang: Benefits, Uses, and How to Make It

Introduction to Medicinal Diet

Di Ding Dang Gui Tang is a classic medicinal dietary formula originating from the empirical therapeutic experience of traditional Chinese medicine in gynecology and external medicine. The formula combines Viola yedoensis (Chinese Violet) and Angelica sinensis (Chinese Angelica) as its core pair, supplemented by small amounts of flavoring ingredients, aiming to regulate various conditions arising from blood-heat binding with stasis or internal accumulation of stasis-toxin through the principle of food-medicine homology. Viola yedoensis is a plant from the Violaceae family, cold in nature, bitter and pungent in flavor; since ancient times, it has been a key herb for clearing heat, resolving toxins, cooling blood, and dispersing swelling. Angelica sinensis is warm in nature, sweet and pungent in flavor; it is a revered herb for supplementing blood, activating blood, regulating menstruation, and alleviating pain. The two herbs—one cold and one warm, one clearing and one supplementing—harmonize cold and warmth, jointly achieving both clearing-resolving and supplementing-benefiting effects.

This soup has been passed down in folk tradition for a long time. It is particularly suitable for women with menstrual irregularities and dysmenorrhea due to blood heat with stasis (血热瘀滞), as well as for the early stages of carbuncles, furuncles, and sores (痈肿疮疡) caused by heat toxin accumulation (热毒蕴结) in dermatological and surgical conditions. It is simple to prepare, with a clear, moist, and slightly sweet taste. It can be used as a daily health soup or as an adjunctive treatment for related disorders under the guidance of a physician. Modern research has also found that *Viola yedoensis* (Chinese violet, 紫花地丁) contains active ingredients such as flavonoids and coumarins, exhibiting broad-spectrum antibacterial and anti-inflammatory effects; while the ferulic acid and volatile oils in *Angelica sinensis* (dong quai, 当归) improve microcirculation and regulate immunity. Synergistically, these actions allow the soup to achieve a balance between clearing heat without damaging the vital (zheng, 正) and enriching the blood without retaining pathogens (xie, 邪).

Efficacy of Medicinal Diet

The core functions of Diding Danggui Decoction are to clear Heat, resolve Toxin, activate Blood, and reduce swelling. Zi Hua Di Ding (Viola yedoensis, Chinese violet) excels at clearing Heat Toxin in the Blood aspect, and is particularly effective in dispersing conditions such as redness, swelling, heat, and pain due to excessive accumulation of Heat Toxin, as well as sores, boils, carbuncles, abscesses, and erysipelas. When combined with Dang Gui (Angelica sinensis, Chinese angelica), it not only enhances the ability to activate Blood and dissipate Stasis, allowing the static Heat pathogen an outlet, but also uses the warming nature of Dang Gui to counteract the excessively cold property of Di Ding, thereby preventing impairment of Spleen and Stomach Yang Qi with prolonged use.

On the other hand, this formula also has the effect of regulating menstruation and alleviating pain. For conditions such as advanced menstruation, dark purple menstrual blood with clots, and stabbing lower abdominal pain during menstruation caused by blood heat complicated by blood stasis, the combination of Viola yedoensis (Tokyo violet) and Angelica sinensis (Chinese angelica) clears heat without stagnating blood, and activates blood without aggravating heat, thereby allowing the heat to be cleared and the stasis to be resolved, so that menstrual blood returns to its normal course. In addition, this decoction can also improve symptoms such as yellow thick vaginal discharge and scanty dark urine caused by damp-heat pouring downward, reflecting the syndrome differentiation thinking of “treating different diseases with the same method” in Chinese medicine.

Indications for Medicinal Diet

This decoction is primarily indicated for TCM patterns of “Heat-Toxin Stagnation and Binding” or “Blood Heat with Blood Stasis”, commonly seen in facial acne with redness, swelling, and pustules, early-stage mastitis, folliculitis, furuncles, and other skin infectious diseases, as well as certain gynecological inflammations accompanied by pelvic pain and abnormal leukorrhea.

The effects of Traditional Chinese Medicine

From the perspective of nature, flavor, and channel entry, *Viola yedoensis* (Chinese Violet) has bitter and acrid flavors, cold nature, and enters the Heart (HT) and Liver (LR) meridians. Bitter flavor drains heat and dries dampness, acrid flavor disperses nodules and unblocks collaterals, and cold nature clears and resolves heat toxin. Therefore, it excels at clearing blood heat from the Heart and Liver meridians, making it suitable for patterns of exuberant heat toxin in the blood aspect. *Angelica sinensis* (Chinese Angelica/Dong Quai) has sweet and acrid flavors, warm nature, and enters the Liver (LR), Heart (HT), and Spleen (SP) meridians. Sweet flavor supplements and relieves urgency, acrid flavor moves, disperses, and quickens blood, and warm nature penetrates and reaches the blood vessels. It is considered a qi-regulating herb within the blood, capable of both supplementing and quickening blood, thereby regulating blood movement. When combined, *Viola yedoensis* clears heat to cut off the source of toxin, while *Angelica sinensis* quickens blood to disperse stasis; they complement each other.

Specifically, the flavonoids abundant in Herba Violae (Violet Herb) exhibit significant anti-inflammatory and antioxidant activities, inhibiting common pathogenic bacteria such as Staphylococcus aureus and Streptococcus. The ferulic acid in Angelicae Sinensis Radix (Dong Quai) suppresses platelet aggregation, improves blood rheology, and alleviates ischemia and hypoxia in local inflamed tissues. The combined use of these two medicinals blocks the pathological cycle of “Heat Congestion and Blood Stasis” through the dual mechanisms of clearing Heat and resolving Toxin, and activating Blood and resolving Stasis—a key treatment principle in TCM for managing carbuncles, abscesses, and Blood-Heat patterns. Additionally, Angelicae Sinensis Radix (Dong Quai) nourishes the Yin Blood consumed by Heat pathogen, thereby expelling the pathogen without damaging the Right (upright) Qi.

Indications

This soup is particularly suitable for individuals with a constitution characterized by intense internal heat-toxin and impaired blood circulation. Common manifestations include recurrent, red, swollen, and painful acne or folliculitis on the face or back, or sudden onset of red, swollen, hard nodules with burning pain in localized areas of the body. It may also serve as an adjuvant dietary therapy for women with blood heat presenting as preceded menstruation, heavy menstruation with dark-colored blood, dysmenorrhea, premenstrual breast distension and pain, as well as during the acute exacerbation of chronic pelvic inflammatory disease accompanied by yellow vaginal discharge and lower abdominal bearing-down pain.

Furthermore, for individuals in adolescence or young adulthood with a heat-prone constitution, who are prone to excessive internal heat (上火), have dry stools, and dark yellow urine, this formula can be administered based on pattern differentiation when experiencing mild skin infections or gynecological inflammations. For those with long-term work stress and a preference for spicy and greasy foods, leading to internal heat accumulation, it can also be taken 2–3 times per month as a health regimen to clear heat and detoxify.

Contraindicated Populations

Patients with spleen-stomach deficiency-cold pattern should use with caution or avoid this substance. In those who usually present with epigastric cold pain, loose stools, poor appetite, tastelessness in the mouth, aversion to cold, and cold extremities, administration of cold-natured herbs such as *Viola yedoensis* (Tokyo Violet) may aggravate deficiency-cold symptoms, and may even lead to diarrhea or stomach pain. Pregnant women should only use under the guidance of a physician, as *Angelica sinensis* (Chinese Angelica) has a stimulating effect on uterine smooth muscle and large doses may induce uterine contractions; moreover, *Viola yedoensis* is cold in nature and may also affect the fetal health.

Additionally, those with extreme deficiency of qi and blood without heat signs—such as pale complexion, shortness of breath and reluctance to speak, dizziness and palpitations, pale tongue and weak pulse—should not use this formula alone, as its strong heat‑clearing property may further consume yang qi. It is contraindicated in individuals allergic to herbs such as *Viola yedoensis* (dìdīng) and *Angelica sinensis* (dāngguī / dong quai). Menstruating women who typically have heavy menstrual flow should use caution, since the blood‑activating effect of *Angelica sinensis* may further increase menstrual bleeding. Patients currently taking anticoagulant medications (e.g., warfarin) should consult their healthcare provider to avoid potential interactions with *Angelica sinensis*.

Proportions of food ingredients in the formula

The standard formula (for a single adult dose) of Diding Danggui Decoction is as follows:

• Viola yedoensis (Chinese violet, dried): 15 g
• Angelica sinensis (Dang Gui), whole root or body portion: 10 g
• Ziziphus jujuba (Jujube, pitted): 3 pieces (approx. 10 g)
• Fresh Ginger (Zingiber officinale): 3 slices (approx. 5 g)
• Purified water: 800 ml
• Salt or honey: appropriate amount (for seasoning only, not used medicinally)

If used for acute abscesses with severe heat toxin, the dosage of *Viola yedoensis* (Zi Hua Di Ding) may be increased to 18g; if blood deficiency is prominent or for menstrual regulation, *Angelica sinensis* (Dang Gui) may be increased to 12g. It is recommended to start with the standard formula for the first administration and consult a TCM practitioner for dosage adjustments according to individual constitution.

Preparation Method

Step 1: Quickly rinse Viola yedoensis (Chinese violet) and Angelica sinensis (Dong Quai) in clean water to remove surface dust. Wash Ziziphus jujuba (Jujube) and tear or cut it open by hand to allow the active constituents to extract. Wash and slice Zingiber officinale (Ginger).

Step 2: Take a clay pot or stainless steel pot (avoid iron or aluminum pots to prevent reactions between the herbal ingredients and the metal). Add 800 ml purified water, then add Viola yedoensis (Chinese Violet), Angelica sinensis (Chinese Angelica), Ziziphus jujuba (Jujube), and fresh Zingiber officinale (Ginger) slices. Soak for 20 minutes to fully hydrate the herbs.

Step 3: Place the pot over strong fire (high heat) until boiling, then reduce to gentle fire (low heat) and maintain a slight simmer for 30 minutes. During this time, do not open the lid frequently to prevent the loss of aromatic constituents.

Step 4: Once the decoction time is complete, use a fine mesh strainer or gauze to filter out the herbal residue, collecting approximately 300–400 ml of liquid. At this point, you may adjust the flavor according to personal preference by adding a small amount of table salt (for a savory decoction) or, after allowing it to cool slightly, an appropriate amount of honey (for a sweet decoction—note that honey is heat-sensitive and should only be added once the liquid has cooled to below 60°C). Stir well before drinking.

Drinking Tips

It is recommended to take the decoction warm on an empty stomach or semi-empty stomach once daily. One course of treatment should not exceed seven consecutive days. For acute conditions, it may be taken twice daily (morning and evening) with an interval of at least six hours between doses. Discontinue use once symptoms are relieved. Prolonged continuous administration is not advisable, as the bitter-cold nature may impair the Stomach.

2. During the course of taking the medication, avoid consuming acrid-spicy, greasy, raw-cold foods, and seafood “trigger foods” (fa wu), such as chili peppers, lamb, crab, and Chinese chives, as these may counteract the medicinal properties or exacerbate Damp-Heat. Additionally, it is recommended to drink plenty of warm water to promote metabolism and the elimination of toxins.

3. If symptoms do not improve after three days of服用, or if adverse reactions such as gastric discomfort, diarrhea, or skin rash occur, discontinue the decoction and consult a TCM practitioner. This soup is a medicated dietary supplement and should not replace formal medical treatment. In particular, for cases of purulent infection accompanied by systemic symptoms such as fever and lymphadenopathy, prompt medical attention is required.