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Si Wu Xiao Feng is a Jing Tang TCVM herbal formula recommended by holistic veterinarians to clear External Wind, detoxify, and nourish Blood in dogs and cats. A modification of Si Wu Tang from Tai Ping Hui Min He Ji Ju Fang (Imperial Grace Formulary of the Tai Ping Era) written by Chen Shi-Wen et al. in 1080, this eleven-herb formula combines potent Blood-nourishing, External Wind-dispersing, Blood-cooling, and toxin-resolving herbs specifically selected for External Wind invasion with underlying Blood deficiency patterns affecting the skin and surface channels. Available as 0.5g Concentrated Capsules (100 count). No contraindications listed. May use as needed for up to 6 months until the problem has cleared, or as directed by your veterinarian. Dosing varies by body weight; your authorizing veterinarian will provide specific guidance.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
What It Supports
- External Wind clearing: Disperses External Wind from the skin and surface channels, addressing the Wind invasion that drives the itching, skin surface changes, and channel disruption associated with Wind-type skin patterns in dogs and cats; the formula's Wind-dispersing herbs target both the Wind itself and the skin channel obstruction it generates
- Detoxification: Resolves Heat toxin and Wind toxin from the skin and surface channels, clearing the toxic accumulation that drives the inflammatory and skin surface presentations associated with Wind-Heat toxin patterns
- Blood nourishment: Nourishes and tonifies Blood through the Si Wu Tang base, addressing the Blood deficiency root that makes the skin channels susceptible to External Wind invasion and sustains adequate Blood to nourish the skin and surface channels during and after Wind-clearing treatment
TCVM Principles
- Primary action: Clear External Wind, detoxify, nourish Blood
- Classical antecedent: Si Wu Xiao Feng is a modification of Si Wu Tang from Tai Ping Hui Min He Ji Ju Fang (Imperial Grace Formulary of the Tai Ping Era) written by Chen Shi-Wen et al. in 1080
Available Forms
- 0.5g Concentrated Capsules (100 Count): Concentrated capsule format for precise dosing in dogs and cats; can be given directly or hidden in food or a soft treat
Suggested Use
Dog and Cat (0.5g Concentrated Capsules): One 0.5g capsule per 20 to 40 lb body weight twice daily, or as directed by your veterinarian. For small dogs and cats under 10 lbs, dose as directed by your veterinarian.
May use as needed for up to 6 months until the problem has cleared, or as directed by your veterinarian. Veterinary authorization is required before use.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Ingredients
Active ingredients: Bai Shao Yao (Paeonia lactiflora) - White Peony root, Bai Xian Pi (Dictamnus dasycarpus) - Dictamnus root bark (Chinese Dittany), Cang Er Zi (Xanthium sibiricum) - Xanthium fruit (Cocklebur fruit), Chi Shao (Paeonia lactiflora) - Red Peony root, Chuan Xiong (Ligusticum chuanxiong) - Sichuan Lovage rhizome, Dang Gui (Angelica sinensis) - Chinese Angelica root, Di Fu Zi (Kochia scoparia) - Kochia fruit (Broom Cypress fruit), Jiang Can (Bombyx mori, dried) - Dried Silkworm (Bombyx with Beauveria bassiana), Jing Jie (Schizonepeta tenuifolia) - Schizonepeta herb (Japanese Catnip), Mu Dan Pi (Paeonia suffruticosa) - Moutan root bark, Shu Di Huang (Rehmannia glutinosa, prepared) - Prepared Rehmannia root. Inactive ingredients: bovine gelatin and gluten-free maltodextrin.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Active Ingredient TCVM Actions
Si Wu Xiao Feng is organized around two functional layers: the classical Si Wu Tang Blood-nourishing base (Dang Gui, Chuan Xiong, Bai Shao Yao, Shu Di Huang) that addresses the root Blood deficiency, and an External Wind-dispersing, toxin-resolving, and Blood-cooling layer that clears the Wind-Heat toxin from the skin and surface channels:
- Dang Gui (Angelica sinensis) - Chinese Angelica root: Tonifies Blood, invigorates Blood, and alleviates stagnation-related discomfort; the formula's chief Blood-tonifying herb and the first herb of the Si Wu Tang base; Dang Gui is the most important classical Blood tonic in the Chinese materia medica and is essential in any formula addressing Blood deficiency as the root of a Wind-type skin pattern; its combined Blood-tonifying and Blood-invigorating actions ensure that new Blood is generated to nourish the skin channels while existing Blood stagnation is resolved
- Shu Di Huang (Rehmannia glutinosa, prepared) - Prepared Rehmannia root: Strongly tonifies Blood and nourishes Kidney Essence; the formula's primary deep Blood and Essence-tonifying herb and the second herb of the Si Wu Tang base; Prepared Rehmannia (Shu Di Huang, steam-processed to transform the raw herb's cold Blood-cooling action into a warm Blood-nourishing action) is the most important classical herb for tonifying Blood at the deep Kidney Essence level, providing the substantial Blood and Essence replenishment that the skin channels need to resist and recover from External Wind invasion
- Bai Shao Yao (Paeonia lactiflora) - White Peony root: Nourishes Blood, astringes Yin, calms Liver Yang, and alleviates spasm; the formula's Blood-nourishing and Yin-astringing herb and the third herb of the Si Wu Tang base; White Peony root (Bai Shao Yao) is a different processing of the same Paeonia lactiflora species as Red Peony root (Chi Shao), but with a completely different action - where Chi Shao cools and invigorates Blood, Bai Shao Yao nourishes Blood, astringes Yin, and calms Liver Yang; its Blood-nourishing action within the Si Wu Tang base contributes to the formula's root Blood-tonifying strategy
- Chuan Xiong (Ligusticum chuanxiong) - Sichuan Lovage rhizome: Invigorates Blood, moves Qi, and opens the channels; the formula's Blood-invigorating herb within the Si Wu Tang base, ensuring that the substantial Blood tonification provided by Dang Gui, Shu Di Huang, and Bai Shao Yao does not become static or cloying; Chuan Xiong's acrid, warm, ascending nature moves Qi and Blood through the channels and prevents the tonic herbs from generating Qi and Blood stagnation, while its channel-opening action helps restore normal circulation to the skin channels obstructed by Wind invasion
- Jing Jie (Schizonepeta tenuifolia) - Schizonepeta herb (Japanese Catnip): Dispels External Wind, releases the surface, and alleviates itching; the formula's primary External Wind-dispersing and surface-releasing herb, targeting the External Wind in the skin and surface channels that drives the itching and skin surface changes of Wind-type skin patterns; Jing Jie's light, acrid, and slightly warm nature releases the Exterior, dispels Wind, and specifically alleviates skin-level itching from Wind invasion, making it one of the most important classical herbs for Wind-type skin patterns in the Chinese materia medica
- Cang Er Zi (Xanthium sibiricum) - Xanthium fruit (Cocklebur fruit): Dispels Wind, opens the nasal passages, and alleviates itching from Wind-Damp invasion; the formula's Wind-Damp-dispelling herb with a specific affinity for dispelling Wind from the skin surface and head channels; Cang Er Zi's acrid, bitter, warm nature disperses Wind-Damp from the surface channels and nasal passages, and its specific skin-itching-alleviating action complements Jing Jie's broader Wind-dispersing strategy by targeting the Wind-Damp component of the skin channel obstruction
- Jiang Can (Bombyx mori, dried) - Dried Silkworm: Dispels External Wind, resolves toxin, disperses nodules, and alleviates itching; the formula's animal-derived Wind-dispersing and toxin-resolving ingredient; the dried silkworm (Bombyx mori infected with Beauveria bassiana fungus) has a specific TCVM action of dispelling Wind and resolving Wind-Heat toxin from the skin and surface channels, with a particular ability to disperse the Wind-related nodulation and itching that characterizes Wind-type skin patterns; its inclusion alongside plant-derived Wind-dispersing herbs reflects the classical strategy of combining animal and plant ingredients for Wind-type patterns affecting the skin
- Bai Xian Pi (Dictamnus dasycarpus) - Dictamnus root bark (Chinese Dittany): Clears Heat, resolves toxin, dries Damp, and alleviates itching; the formula's primary Heat toxin-clearing and itch-alleviating herb for the skin, with a specific classical reputation as one of the most important herbs for Wind-Heat-Damp skin patterns with itching in the Chinese materia medica; Bai Xian Pi's bitter cold nature clears Heat toxin from the skin channels while drying the Damp component that often accompanies Wind-Heat skin patterns, and its strong anti-itch action directly addresses the most prominent sign of Wind-type skin patterns
- Di Fu Zi (Kochia scoparia) - Kochia fruit (Broom Cypress fruit): Clears Damp-Heat, promotes urination, and alleviates skin itching; the formula's Damp-Heat-clearing and urinary-draining herb for the skin, working with Bai Xian Pi to clear the Damp-Heat component from the skin channels while draining it downward through the urinary pathway; Di Fu Zi's specific affinity for clearing Damp-Heat from the skin and alleviating itching from Damp-Heat in the skin channels makes it an important complementary herb to Bai Xian Pi's toxin-clearing action
- Chi Shao (Paeonia lactiflora) - Red Peony root: Cools Blood, invigorates Blood, and clears Heat; the formula's Blood-cooling and Heat-clearing herb, addressing the Blood Heat component that frequently accompanies Wind-Heat toxin invasion when pathogenic Heat penetrates from the surface channels into the Blood; Chi Shao's combined Blood-cooling and Blood-invigorating action works alongside the Si Wu Tang base to ensure that while the tonic herbs nourish Blood, any Heat accumulating at the Blood level is simultaneously cleared
- Mu Dan Pi (Paeonia suffruticosa) - Moutan root bark: Cools Blood, clears Heat, and invigorates Blood; works with Chi Shao as the formula's Blood-cooling pair, completing the classical Mu Dan Pi and Chi Shao combination for Blood Heat patterns; Mu Dan Pi's specific Liver channel affinity and its combined Blood-cooling and Blood-invigorating actions complement Chi Shao's Blood-cooling strategy and ensure that Heat accumulating in the Blood level from Wind-Heat toxin invasion is thoroughly cleared
Potential Drug Interactions
Si Wu Xiao Feng contains Blood-nourishing herbs from the Si Wu Tang base (Dang Gui, Shu Di Huang, Bai Shao Yao, Chuan Xiong), External Wind-dispersing herbs (Jing Jie, Cang Er Zi, Jiang Can), toxin-resolving and itch-alleviating herbs (Bai Xian Pi, Di Fu Zi), and Blood-cooling herbs (Chi Shao, Mu Dan Pi) that may interact with certain medications. The formula's Blood-invigorating herbs (Chuan Xiong, Chi Shao, Mu Dan Pi) may interact with anticoagulant medications. Pets on prescription medications should use this formula under veterinary supervision, as herb-drug interaction research in dogs and cats remains limited.
Medication categories warranting extra caution include anticoagulant or antiplatelet medications, immunosuppressive medications, and multiple concurrent prescription medications. May use as needed for up to 6 months until the problem has cleared, or as directed by your veterinarian. Your veterinarian can determine appropriateness based on the patient's condition, medications, and laboratory results.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Frequently Asked Questions
What is Si Wu Xiao Feng used for in TCVM?
Si Wu Xiao Feng is used in TCVM for External Wind invasion patterns affecting the skin and surface channels in animals with underlying Blood deficiency - the pattern in which External Wind invades the surface channels of a Blood-deficient patient and generates Wind-type skin signs including itching, skin surface changes, and channel disruption that fluctuates with weather and environmental triggers. In TCVM, Blood deficiency of the skin channels is the root condition that makes animals susceptible to Wind invasion at the surface - when Blood is insufficient to nourish and anchor the skin channels, External Wind can more easily invade and generate Wind-type skin patterns. Si Wu Xiao Feng addresses this two-layer pattern by nourishing the Blood root (Si Wu Tang base) while simultaneously clearing the Wind branch (Wind-dispersing and toxin-resolving herbs), making it uniquely suited for Wind-type skin patterns with an underlying Blood deficiency component. The manufacturer lists no contraindications for this formula.
How is Si Wu Xiao Feng administered and dosed?
For dogs and cats, give one 0.5g capsule per 20 to 40 lb body weight twice daily, or as directed by your veterinarian. For small dogs and cats under 10 lbs, dose as directed by your veterinarian. Capsules can be given directly or hidden in food or a soft treat for easy administration. May use as needed for up to 6 months until the problem has cleared, or as directed by your veterinarian.
What is the Si Wu Tang classical base and why is it used in a Wind-clearing skin formula?
Si Wu Tang (Four-Substance Decoction) is one of the most foundational Blood-nourishing formulas in classical Chinese medicine and one of the most widely used classical base formulas in the entire Chinese materia medica tradition. It originates from Tai Ping Hui Min He Ji Ju Fang (Imperial Grace Formulary of the Tai Ping Era), an imperial formulary compiled by Chen Shi-Wen and others and published in 1080 during the Northern Song dynasty - one of the most important official government formularies in the history of Chinese medicine. Si Wu Tang's four-herb base (Dang Gui, Shu Di Huang, Bai Shao Yao, Chuan Xiong) became the canonical formula for Blood deficiency and Blood stasis in the centuries following its publication and has served as the foundational Blood-nourishing building block for hundreds of modifications in both human TCM and TCVM. Its inclusion as the base of Si Wu Xiao Feng reflects the classical TCVM understanding that Wind-type skin patterns in animals with chronic or recurrent presentations frequently have an underlying Blood deficiency root - when Blood is insufficient to nourish the skin channels, External Wind can more easily invade and persist. By incorporating Si Wu Tang's Blood-nourishing foundation, Si Wu Xiao Feng addresses both the root (Blood deficiency) and the branch (External Wind invasion) simultaneously, rather than only clearing Wind from the surface.
What is the role of Jiang Can (Dried Silkworm) in this formula and why is an animal ingredient included?
Jiang Can (Bombyx mori, dried silkworm infected with Beauveria bassiana fungus) is included in Si Wu Xiao Feng because of its specific TCVM action of dispelling External Wind, resolving Wind toxin, and alleviating itching from Wind-type skin patterns - actions that complement the plant-derived Wind-dispersing herbs (Jing Jie, Cang Er Zi) with a different mechanism and channel affinity. In classical TCVM theory, animal-derived ingredients often have unique abilities to enter channels and address pathological patterns that plant herbs alone cannot fully resolve. Jiang Can specifically enters the Liver and Lung channels, disperses Wind and Wind-Heat toxin from the surface channels and skin, and has a classical reputation for alleviating itching and dispersing the nodulation and skin surface accumulation associated with Wind-Heat patterns. Its combined Wind-dispersing and toxin-resolving action from an animal-derived source complements Jin Jie's and Cang Er Zi's plant-derived Wind-dispersing actions, giving the formula a broader Wind-clearing strategy that addresses the Wind pattern through multiple ingredient categories simultaneously.
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