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Herbsmith Rx Ba Zheng San is a classical Chinese herbal formula recommended by holistic veterinarians to clear lower burner damp-heat, promote urination, and address difficult or uncomfortable urination from lower jiao damp-heat accumulation in cats, dogs, and horses. Also known as Eight Herb Formula for Rectification, Eight Righteous Powder, Crystal/Stone Formula, Relieving Formula, Eight Corrections Powder, and Urinary Health, Ba Zheng San is one of the most important classical formulas for the lower burner damp-heat pattern, where accumulated heat and dampness in the lower jiao obstruct the bladder's qi transformation function and generate the characteristic difficult, uncomfortable, or dark and scanty urination that defines the lin syndrome (urinary difficulty) pattern. The formula's name refers to its eight primary clearing and draining herbs, which collectively rectify the lower jiao damp-heat obstruction. The nine-herb formula addresses the lower burner damp-heat pattern through three simultaneous therapeutic strategies: clearing heat and draining damp through the urine to address the lower jiao obstruction directly (Hua Shi, Che Qian Zi, Qu Mai, Bian Xu, Mu Tong, Deng Xin Cao), clearing heat from the triple burner and heart to address the systemic heat component (Zhi Zi), purging heat from the interior and unblocking the bowels to provide an additional heat-clearing exit route (Zhi Da Huang), and harmonizing the formula and protecting the middle jiao (Gan Cao). Well suited for dogs, cats, and horses presenting with the lower jiao damp-heat pattern, characterized by difficult, frequent, or uncomfortable urination; dark, scanty, or concentrated urine; straining to urinate; dry mouth and thirst; a yellow or greasy tongue coating reflecting damp-heat in the lower jiao; and a slippery-rapid or rapid pulse. Available as a concentrated powder mixed into food; dogs and cats use the Canine Blend, while horses use the Equine/Horse Blend. Dosing varies by species and body weight, and your authorizing veterinarian will provide specific guidance.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
What It Supports
- Damp-heat draining and urinary obstruction clearing through Hua Shi as the chief herb: Clears heat, drains dampness through the urine, and addresses the damp-heat obstruction in the lower jiao directly through Hua Shi (talcum, Talcum). Hua Shi's sweet and cold nature enters the stomach and urinary bladder channels to drain damp-heat downward and out through the urine, clearing the lower jiao obstruction and promoting free urine flow. As the formula's chief herb in terms of quantity, Hua Shi provides the primary damp-heat-draining and urinary-promoting action that addresses the central pathology of the lower jiao damp-heat lin pattern. Generally well tolerated at standard doses; use under veterinary supervision.
- Urinary promotion and damp-heat draining through Che Qian Zi: Promotes urination, clears heat and damp from the lower jiao, clears the eyes, and addresses difficult urination from damp-heat bladder obstruction through Che Qian Zi (plantago seed, Semen Plantaginis). Che Qian Zi's sweet and cold nature enters the kidney, liver, lung, and small intestine channels to promote the free flow of urine and drain damp-heat from the lower jiao through the diuretic route. Che Qian Zi is one of the most important single herbs for promoting urination from damp-heat patterns and pairs with Hua Shi as the formula's primary damp-draining pair. Generally well tolerated.
- Bladder damp-heat clearing and urinary unblocking through Qu Mai: Clears heat, promotes urination, unblocks urinary difficulty, and addresses the heat and damp obstruction in the bladder through Qu Mai (dianthus herb, Herba Dianthi). Qu Mai's bitter and cold nature enters the heart and small intestine channels to clear heat from the heart and small intestine and drain it downward through the bladder via the heart-small intestine-bladder relationship, addressing both the local bladder damp-heat obstruction and its upstream heat source. Qu Mai has a particularly strong action on promoting urination and unblocking the urinary passages. Generally well tolerated.
- Bladder damp clearing and urinary passage unblocking through Bian Xu: Clears damp-heat from the bladder, promotes urination, and addresses the dampness component of the lower jiao obstruction through Bian Xu (knotweed herb, Herba Polygoni Avicularis). Bian Xu's bitter and slightly cold nature enters the urinary bladder channel to drain dampness from the lower jiao and promote the free flow of urine, addressing the damp component of the damp-heat pattern alongside the heat-clearing herbs. Qu Mai and Bian Xu are frequently paired as a damp-heat-clearing and urination-promoting pair for the lin syndrome pattern, together providing comprehensive clearing of the bladder's damp-heat obstruction. Generally well tolerated.
- Triple burner heat clearing and urinary passage unblocking through Mu Tong: Clears heat from the heart and small intestine, promotes urination, unblocks the urinary passages, and addresses the heat stagnation in the triple burner that is contributing to the lower jiao damp-heat obstruction through Mu Tong (akebia stem, Caulis Mutong). Mu Tong's bitter and cold nature enters the heart, small intestine, and urinary bladder channels to clear heat downward through the small intestine-bladder axis and promote urination. The Herbsmith Rx preparation uses the Akebia (Bai Mu Tong/Chuan Mu Tong) species, which does not contain aristolochic acid; please confirm the species with your authorizing veterinarian before use.
- Heart heat clearing and urinary difficulty addressed through Deng Xin Cao: Clears heat from the heart, promotes urination, and addresses the heart fire that is descending to the small intestine and bladder to generate the damp-heat urinary obstruction through Deng Xin Cao (rush pith, Medulla Junci Effusi). Deng Xin Cao's sweet and slightly cold nature enters the heart, lung, and small intestine channels to clear the heart fire contributing to lower jiao heat through the heart-small intestine axis, addressing the systemic heat component of the pattern through the lightest and most clearing herb in the formula. Generally well tolerated.
- Triple burner heat clearing and systemic heat addressing through Zhi Zi: Clears heat from the triple burner and heart, drains damp-heat, and addresses the systemic heat component of the lower jiao damp-heat pattern through Zhi Zi (gardenia fruit, Fructus Gardeniae Jasminoidis). Zhi Zi's bitter and cold nature enters the heart, lung, stomach, and triple burner channels to clear heat from all three burners and drain damp-heat through the urine, addressing the broader systemic heat fueling the lower jiao damp-heat accumulation. Zhi Zi also has a mild calming action on the heart spirit when heart fire is generating the lin syndrome discomfort. Generally well tolerated.
- Interior heat purging and additional heat-clearing exit route through Zhi Da Huang: Purges heat and stagnation from the interior, drains fire downward through the bowels, and provides an additional exit route for the accumulated lower jiao heat through Zhi Da Huang (treated rhubarb root, Treated Radix et Rhizoma Rhei). Zhi Da Huang's bitter and cold nature enters the spleen, stomach, large intestine, liver, and heart channels to purge the accumulated interior heat downward through the bowels, ensuring the damp-heat has both a urinary (the formula's primary clearing route) and a bowel (secondary route) exit. The treated preparation (wine-processed or steam-processed Da Huang) retains the heat-clearing and blood-activating properties while moderating the raw herb's strong purgative action. Anthraquinone content; anticoagulant effects from emodin; monitoring warranted in animals on anticoagulant medications. Do not use in animals with diarrhea.
- Formula harmonization and middle jiao protection through Gan Cao: Harmonizes the formula's herbs, moderates the harsh cold properties of the formula's multiple bitter-cold herbs, tonifies the spleen qi, and protects the middle jiao from the formula's strongly clearing and draining herbs through Gan Cao (licorice root, Radix Glycyrrhizae Uralensis). Gan Cao's sweet and neutral nature harmonizes the formula's diverse herb actions and ensures the strongly clearing and draining herbs do not impair the middle jiao's transforming function. Raw Gan Cao is specified here for its harmonizing and heat-moderating action. Glycyrrhizin has mineralocorticoid-like effects; monitor closely with corticosteroids and antihypertensive medications.
TCVM Principles
- Primary action - lower jiao damp-heat lin syndrome with difficult, uncomfortable, dark, or scanty urination through the combined strategy of damp-heat draining through the urine (Hua Shi, Che Qian Zi, Qu Mai, Bian Xu, Mu Tong, Deng Xin Cao), systemic triple burner heat clearing (Zhi Zi), interior heat purging through the bowels (Zhi Da Huang), and middle jiao harmonization (Gan Cao): Addresses the lower burner damp-heat lin pattern through three simultaneous therapeutic strategies. The six urinary-draining herbs address the damp-heat obstruction from multiple channels: Hua Shi drains damp-heat through the urine as the chief herb; Che Qian Zi promotes urination from the kidney and bladder; Qu Mai and Bian Xu clear heat and damp from the bladder together; Mu Tong clears heart-small intestine-bladder heat; Deng Xin Cao clears heart fire descending to the bladder. Zhi Zi clears heat from the triple burner. Zhi Da Huang purges interior heat through the bowels as a secondary exit route. Gan Cao harmonizes and protects the middle jiao. Treatment Principles: clear heat, drain dampness through the urine, unblock the urinary passages, and address lower jiao damp-heat lin syndrome.
- Secondary action - pattern differentiation from kidney qi vacuity urinary difficulty (requiring tonification rather than clearing), kidney yin vacuity with urinary signs (requiring yin nourishment without the strong clearing and draining), and cold lin syndrome (where the formula's cold herbs would aggravate the cold obstruction): Ba Zheng San is indicated specifically for the lower jiao damp-heat pattern with excess heat and damp signs, not for kidney qi vacuity urinary difficulty (pale tongue, weak pulse, cold signs - requiring tonification), kidney yin vacuity with urinary frequency (red tongue with little coating, thin pulse - requiring yin nourishment), or cold lin syndrome (pale tongue, slow pulse - where the cold-natured clearing herbs would worsen the obstruction). The yellow or greasy tongue coating and the rapid or slippery-rapid pulse are the critical differentiating signs confirming the damp-heat pattern. Because urinary signs in cats and dogs can have serious underlying causes, veterinary diagnosis is essential before attributing the presentation to the lower jiao damp-heat pattern. Your authorizing veterinarian will confirm the lower burner damp-heat pattern through tongue and pulse examination and urinalysis.
Available Forms
- Powder - Canine Blend (for dogs and cats): Available in 75 g, 150 g, 500 g, 900 g, and 1200 g sizes; mix into food at the recommended dose for your pet's weight. Cats and dogs both use this blend.
- Powder - Equine/Horse Blend (for horses): Available in 150 g, 500 g, 900 g, and 1200 g sizes; mix into grain at the recommended dose for your horse.
Suggested Use
For Dogs (Canine Blend Powder):
- Under 30 lbs: ½ tsp twice daily, or as prescribed
- 30-80 lbs: 1 tsp twice daily, or as prescribed
- 80-120 lbs: 1½ tsp twice daily, or as prescribed
- Over 120 lbs: 2 tsp twice daily, or as prescribed
For Cats (Canine Blend Powder): ¼ tsp twice daily, or as prescribed
For Horses (Equine/Horse Blend, 1,000 lb horse): Two tablespoons twice daily for 20 days, then two tablespoons once daily in grain. If the horse initially refuses, start with a small amount mixed into grain and gradually increase. Most horses will readily accept the herbs in their grain.
Ingredients
Active Ingredients: Mu Tong (Caulis Mutong - Akebia preparation), Hua Shi (Talcum), Che Qian Zi (Semen Plantaginis), Qu Mai (Herba Dianthi), Bian Xu (Herba Polygoni Avicularis), Zhi Zi (Fructus Gardeniae Jasminoidis), Zhi Da Huang (Treated Radix et Rhizoma Rhei), Deng Xin Cao (Medulla Junci Effusi), Gan Cao (Radix Glycyrrhizae Uralensis)
Inactive Ingredient: Flaxseed
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Active Ingredient TCVM Actions
Ba Zheng San is a nine-herb formula organized around three therapeutic strategies: damp-heat draining through the urine with urinary passage unblocking (Hua Shi, Che Qian Zi, Qu Mai, Bian Xu, Mu Tong, Deng Xin Cao), systemic triple burner heat clearing (Zhi Zi), and interior heat purging with formula harmonization (Zhi Da Huang, Gan Cao):
- Hua Shi (Talcum) - Talc / Slippery Stone: Chief herb by quantity; drains damp-heat through the urine and clears lower jiao heat obstruction. Generally well tolerated at standard doses; use under veterinary supervision.
- Che Qian Zi (Semen Plantaginis) - Plantago Seed / Plantain Seed: Promotes urination and drains damp-heat from the kidney and bladder. Generally well tolerated.
- Qu Mai (Herba Dianthi) - Dianthus Herb / Fringed Pink: Clears heat from the heart and small intestine and drains it through the bladder; strongly unblocks urinary passages. Generally well tolerated.
- Bian Xu (Herba Polygoni Avicularis) - Knotweed Herb / Prostrate Knotweed: Clears bladder damp-heat and promotes urination; pairs with Qu Mai as the formula's primary bladder damp-heat-clearing pair. Generally well tolerated.
- Mu Tong (Caulis Mutong) - Akebia Stem (Bai Mu Tong / Chuan Mu Tong preparation): Clears heart-small intestine-bladder heat and promotes urination through the triple burner axis. Herbsmith Rx preparation uses the Akebia species (aristolochic acid-free); please confirm species with your authorizing veterinarian before use.
- Deng Xin Cao (Medulla Junci Effusi) - Rush Pith / Soft Rush Pith: Clears heart fire and addresses heart fire descending to the small intestine and bladder; the lightest and most clearing herb in the formula. Generally well tolerated.
- Zhi Zi (Fructus Gardeniae Jasminoidis) - Gardenia Fruit / Cape Jasmine Fruit: Clears heat from all three burners and drains damp-heat; addresses systemic triple-burner heat fueling lower-jiao accumulation. Generally well tolerated.
- Zhi Da Huang (Treated Radix et Rhizoma Rhei) - Treated Rhubarb Root: Purges interior heat through the bowels as the formula's secondary heat-clearing exit route. Anthraquinone and emodin have anticoagulant effects; monitor closely when using anticoagulant medications. Do not use in animals with diarrhea.
- Gan Cao (Radix Glycyrrhizae Uralensis) - Licorice Root: Harmonizes the formula and protects the middle jiao from the multiple bitter-cold clearing herbs. Glycyrrhizin content; monitoring warranted with corticosteroids and antihypertensive medications.
Potential Drug Interactions
Ba Zheng San has a moderate drug interaction profile centered on its strongly clearing and draining herbs. The primary concern is Zhi Da Huang's anthraquinone and emodin anticoagulant effects, with monitoring warranted in animals on warfarin, heparin, aspirin, clopidogrel, or other anticoagulant or antiplatelet medications; Da Huang's purgative action also contraindicates use in animals with diarrhea. Secondary concerns include: Gan Cao's glycyrrhizin-based mineralocorticoid-like effects (monitoring warranted with corticosteroids, where additive fluid retention is possible, and antihypertensive medications, where the fluid-retaining tendency could counteract the medication); and the formula's multiple bitter-cold herbs collectively increasing the diuretic effect, which warrants monitoring in animals on diuretic medications (where the combined diuretic action could lead to excessive fluid or electrolyte loss) and in animals on medications requiring consistent hydration for safe use. The Mu Tong in this preparation is the Akebia (Bai Mu Tong/Chuan Mu Tong) species, which does not contain aristolochic acid; confirm species with your authorizing veterinarian, as the classical Guan Mu Tong (Aristolochia manshuriensis) is nephrotoxic and contraindicated in all animals.
Medication categories warranting extra caution: anticoagulant and antiplatelet medications (Zhi Da Huang emodin and anthraquinone anticoagulant effects - primary concern), diuretic medications (additive diuretic action from multiple clearing and draining herbs), corticosteroids (Gan Cao glycyrrhizin mineralocorticoid effects), and antihypertensive medications (Gan Cao fluid-retaining tendency). Because urinary signs in cats and dogs have multiple possible underlying causes, and because Ba Zheng San's cold clearing and draining strategy is appropriate only for the damp-heat excess pattern, veterinary urinalysis and pattern confirmation are particularly important before initiating use. Your authorizing veterinarian will determine appropriateness based on your animal's condition, current medications, urinalysis results, tongue quality, and pulse character.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Frequently Asked Questions
What conditions is Ba Zheng San used for in TCVM?
In Traditional Chinese Veterinary Medicine, Ba Zheng San is indicated for the lower jiao damp-heat lin syndrome pattern. The clinical presentation centers on difficult, frequent, or uncomfortable urination; dark, scanty, or concentrated urine; straining to urinate; dry mouth and thirst from the heat component; a yellow or greasy tongue coating reflecting damp-heat accumulation in the lower jiao; and a slippery-rapid or rapid pulse. This formula is suited to the damp-heat excess pattern with clear heat signs, not to urinary difficulty from kidney qi vacuity, kidney yin vacuity, or cold obstruction. Because urinary signs can indicate serious underlying conditions, veterinary diagnosis, including urinalysis, is essential before attributing the presentation to the lower jiao damp-heat pattern. Your authorizing veterinarian will confirm the lower burner damp-heat pattern through tongue and pulse examination and urinalysis.
How is Ba Zheng San administered to dogs, cats, and horses?
Mix the powder into food or grain at the dose recommended for your animal's species and body weight. Dogs and cats use the Canine Blend; horses use the Equine/Horse Blend. All species receive the formula twice daily, with horses following the standard 20-day twice-daily loading protocol before transitioning to once-daily maintenance dosing. Because Ba Zheng San contains Zhi Da Huang with anticoagulant effects and multiple strongly clearing and draining herbs with additive diuretic action, veterinary review of all current medications is recommended before use. The formula is contraindicated in animals with diarrhea (due to Da Huang's purgative action) and should not be used in animals with kidney qi vacuity or cold urinary patterns without veterinary reassessment of the pattern diagnosis. Confirm the Mu Tong species (Akebia, aristolochic acid-free) with your authorizing veterinarian before initiating treatment.
How long does it take to see results with Ba Zheng San?
As a formula for an acute damp-heat excess pattern, Ba Zheng San is expected to show results relatively quickly when the lower jiao damp-heat lin pattern is correctly identified. In animals with the appropriate damp-heat presentation, early improvement in the most acute urinary signs (decreased straining, less dark or concentrated urine, improved urinary flow) may be seen within 3 to 7 days as the formula's heat-clearing and damp-draining herbs clear the lower jiao obstruction. More complete resolution of the yellow tongue coating and rapid pulse typically requires 1 to 3 weeks in straightforward damp-heat cases. If urinary signs do not improve within the first week of treatment, veterinary reassessment is warranted to rule out structural urinary disease or confirm the pattern diagnosis. Because Ba Zheng San's cold clearing strategy is not appropriate for long-term maintenance use in animals without active damp-heat signs, your authorizing veterinarian will determine the appropriate treatment duration.
Is Ba Zheng San appropriate for cats with urinary tract concerns?
Ba Zheng San is appropriate for cats presenting with the lower jiao damp-heat lin syndrome pattern, including cats with the characteristic difficult, uncomfortable, or dark and scanty urination alongside a yellow or greasy tongue coating and a rapid pulse indicating active damp-heat in the lower jiao. In cats, urinary presentations require careful veterinary assessment before initiating any herbal treatment, as feline lower urinary tract signs can have multiple underlying causes, including urolithiasis, idiopathic cystitis, urethral obstruction, and other structural conditions that require different approaches. Ba Zheng San addresses the damp-heat pattern specifically; it is not a general urinary supplement appropriate for all cats with urinary signs. The formula's cold, draining nature also requires pattern confirmation to avoid using it in cats with cold or deficiency patterns. Veterinary tongue and pulse assessment, along with urinalysis, is essential before initiating treatment with this formula in cats.
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