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Herbsmith Rx Bai He Gu Jin San is a classical Chinese herbal formula recommended by holistic veterinarians to nourish the yin, moisten the lungs, transform phlegm, and address dry, persistent coughing from lung yin vacuity in cats, dogs, and horses. Also known as Lily Bulb to Preserve the Metal, Lilium Teapills, Lily Combination, and Lily Preserve Metal, Bai He Gu Jin San is one of the most important classical Chinese formulas for the lung yin vacuity pattern with dryness coughing, where insufficient lung yin fails to moisten the lung passages, generating dry cough, hoarseness, dryness of the throat and respiratory passages, and the characteristic dry or scanty phlegm that accompanies yin-deficient respiratory patterns. The formula's name (Preserve the Metal) reflects its role in protecting the lung (the metal organ) by nourishing the yin and moisture that the lung requires to maintain its descending and diffusing function. The ten-herb formula addresses the lung yin vacuity pattern through three simultaneous therapeutic strategies: nourishing the lung and kidney yin and moistening the lung passages to address the root yin insufficiency (Bai He, Sheng Di Huang, Shu Di Huang, Mai Men Dong, Xuan Shen), transforming phlegm and directing the lung qi downward to address the symptomatic coughing (Bei Mu, Jie Geng), and nourishing the blood, softening the liver, and harmonizing the formula (Dang Gui, Bai Shao, Gan Cao). Well suited for dogs, cats, and horses presenting with the lung yin vacuity pattern, characterized by a dry, persistent, or unproductive cough; dryness of the throat and respiratory passages; scanty or sticky phlegm or mucus; a red tongue with little or no coating reflecting yin vacuity and dryness; and a thin or thin-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
If the horse initially refuses, start with a small amount mixed into grain and gradually increase, or as directed by your veterinarian. Most horses will readily accept the herbs in their grain.
Active Ingredients: Bai He (Bulbus Lilii), Sheng Di Huang (Radix Rehmanniae Glutinosae), Shu Di Huang (Radix Rehmanniae Glutinosae Conquitae), Mai Men Dong (Tuber Ophiopogonis Japonici), Xuan Shen (Radix Scrophulariae Ningpoensis), Bei Mu (Bulbus Fritillariae), Jie Geng (Radix Platycodi Grandiflori), Dang Gui (Radix Angelicae Sinensis), Bai Shao (Radix Paeoniae Lactiflorae), Gan Cao (Radix Glycyrrhizae Uralensis)
Inactive Ingredient: Flaxseed
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
Bai He Gu Jin San is a ten-herb formula organized around three therapeutic strategies: lung and kidney yin nourishment with lung moistening (Bai He, Sheng Di Huang, Shu Di Huang, Mai Men Dong, Xuan Shen), phlegm transformation and lung qi diffusing (Bei Mu, Jie Geng), and blood nourishment with formula harmonization (Dang Gui, Bai Shao, Gan Cao):
Bai He Gu Jin San contains blood-nourishing and blood-activating herbs, including Dang Gui and Bai Shao, as well as licorice root (Gan Cao), which warrant consideration when reviewing medications. Pets taking prescription medications should use this formula under veterinary supervision because herb-drug interaction research in dogs and cats is limited. Horses taking prescription medications should also have their veterinarian review the formula before use.
Medication categories warranting extra caution include anticoagulant or antiplatelet medications, corticosteroids, antihypertensive medications, and oral medications requiring consistent absorption, particularly in animals with weak digestion. Veterinary confirmation of the lung yin vacuity pattern is important because the formula's rich yin-nourishing herbs are not appropriate for active exterior patterns or significant phlegm-damp accumulation. Your authorizing veterinarian can determine appropriateness based on your animal's condition, current medications, and laboratory results, together with tongue, pulse, and respiratory assessment.
VETERINARY AUTHORIZATION REQUIRED: Submit Your Authorization Request or Request a TCVM Telemedicine Consultation
In Traditional Chinese Veterinary Medicine, Bai He Gu Jin San is indicated for the lung yin vacuity pattern with dry coughing and scanty phlegm. The clinical presentation centers on a dry, persistent, or unproductive cough with little or no phlegm, or with scanty sticky phlegm that is difficult to expectorate; dryness or hoarseness of the throat and respiratory passages; a red tongue with little or no coating reflecting the yin vacuity and dryness; and a thin or thin-rapid pulse. This formula is suited for chronic or subacute coughing with clear yin vacuity signs, not for acute coughing from exterior wind patterns or for coughing with abundant phlegm from phlegm-heat or phlegm-damp accumulation. Your authorizing veterinarian will confirm the lung yin vacuity pattern through tongue and pulse examination and assessment of the cough character and respiratory signs.
Mix the powder into food or grain. Dogs and cats use the Canine Blend. For dogs under 30 lbs, give ½ tsp twice daily, or as directed by your veterinarian. For dogs 30-80 lbs, give 1 tsp twice daily, or as directed by your veterinarian. For dogs 80-120 lbs, give 1½ tsp twice daily, or as directed by your veterinarian. For dogs over 120 lbs, give 2 tsp twice daily, or as directed by your veterinarian. For cats, give ¼ tsp twice daily, or as directed by your veterinarian.
Horses use the Equine/Horse Blend. For a 1,000 lb horse, give two tablespoons twice daily, or as directed by your veterinarian. Continue the initial schedule for 20 days, or as directed by your veterinarian. Then give two tablespoons once daily in grain, or as directed by your veterinarian. If the horse initially refuses, start with a small amount mixed into grain and gradually increase, or as directed by your veterinarian. Veterinary review of current medications and confirmation of the lung yin vacuity pattern are important before use, particularly for animals taking anticoagulant medications or showing active exterior patterns or significant phlegm-damp accumulation.
As a formula addressing the deep yin level, Bai He Gu Jin San typically requires sustained treatment before significant improvement is seen, since nourishing the yin and rebuilding the lung's fluid reserves is a gradual process. Early improvement in the most responsive signs (reduced frequency of coughing episodes, decreased throat dryness, improved moisture in the respiratory passages) may be seen within 3 to 4 weeks in subacute cases. Significant improvement in the tongue coating (from little or no coating toward a thin white coating returning) and pulse quality (from thin-rapid toward less prominent) typically requires 6 to 10 weeks. Chronic lung yin vacuity with established dryness may require 3 to 6 months of treatment, or as directed by your veterinarian, to fully rebuild the lung yin. Your authorizing veterinarian will monitor tongue, pulse, and respiratory signs throughout the treatment course.
Bai He Gu Jin San is appropriate for horses presenting with the lung yin vacuity pattern, including horses with dry, persistent coughing with little phlegm production, dryness of the upper respiratory passages, and the characteristic yin vacuity tongue and pulse signs. In horses, the lung yin vacuity pattern may appear in chronic lower airway conditions with dryness as a primary feature, prolonged illness depleting the lung yin, or constitutional yin vacuity with respiratory involvement. The formula is not appropriate for horses with abundant phlegm production (where phlegm-clearing formulas are needed) or for horses with the lung phlegm-heat pattern (where Bei Mu San or similar formulas addressing heat and phlegm accumulation are more appropriate). Because horses with respiratory conditions may have complex presentations involving multiple patterns, veterinary tongue and pulse assessment is essential to confirm the lung yin vacuity pattern before starting this formula.
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