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Herbsmith Rx Xiao Qing Long San is a classical Chinese herbal formula recommended by holistic veterinarians to support respiratory health, transform congested fluids, and warm the lungs in dogs, cats, and horses. Based on the traditional formula Xiao Qing Long Tang (also known as Minor Bluegreen Dragon Powder), it releases the exterior, transforms congested fluids, warms the lungs, and directs rebellious qi downward. It is well suited for pets presenting with cold-fluid obstruction in the lung, including signs such as cough with watery or clear nasal discharge, wheezing, labored breathing, aversion to cold, and absence of thirst arising from a cold-fluid pattern in the interior combined with wind-cold on the exterior. Available as a concentrated powder mixed into food; cats and dogs 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.
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For Dogs (Canine Blend Powder):
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 until the horse is accustomed to the taste. Most horses will readily accept the herbs in their grain.
Active Ingredients: Gui Zhi (Ramulus Cinnamomi Cassiae), Gan Jiang (Rhizoma Zingiberis Officinalis), Xi Xin (Herba cum Radice Asari), Wu Wei Zi (Fructus Schisandrae Chinensis), Bai Shao (Radix Paeoniae Lactiflorae), Ban Xia (Rhizoma Pinelliae Ternatae), Zhi Gan Cao (Honey-fried Radix Glycyrrhizae Uralensis)
Inactive Ingredient: Flaxseed
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Xiao Qing Long San is a seven-herb formula that balances warming and dispersing herbs with an astringent herb to simultaneously release the exterior, warm and transform internal cold-fluid accumulation, and protect lung qi from excessive dispersal:
Xiao Qing Long San contains warming and fluid-transforming herbs including Gui Zhi, Gan Jiang, Xi Xin, and Ban Xia, which have significant warming, vasodilating, and mucous-membrane-stimulating properties. Xi Xin (Asarum) in particular warrants close veterinary monitoring in pets with pre-existing kidney conditions, as it contains compounds that require appropriate dosing and duration management. Pets currently 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 cardiac medications, diuretics, anticoagulant or antiplatelet medications, immunosuppressive drugs, and pets with pre-existing kidney or cardiac conditions. Your authorizing veterinarian can determine appropriateness based on your pet's condition, current medications, and laboratory results.
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In Traditional Chinese Veterinary Medicine, Xiao Qing Long San is indicated for wind-cold exterior invasion with internal cold-fluid accumulation (yin zhuo) in the lung, presenting as cough with watery or clear nasal discharge, wheezing, labored breathing, aversion to cold, absence of thirst, and a tight or wiry pulse. It is also known as Minor Bluegreen Dragon Powder, and is appropriate for pets whose respiratory presentations have a clear cold pattern with watery fluid accumulation rather than a heat or dryness presentation.
Mix the powder directly into food or grain at the dose recommended for your pet's species and body weight. Both dogs and cats use the Canine Blend; horses use the Equine/Horse Blend. Dogs and cats receive the formula twice daily; horses receive two tablespoons twice daily for the first 20 days, then once daily for maintenance. Your authorizing veterinarian will confirm the appropriate dose and schedule for your individual pet.
As a formula designed for an exterior-interior combined cold pattern, Xiao Qing Long San is intended to act relatively promptly when the pattern is well matched. Many pets show improvement in cough, nasal discharge, and breathing ease within 1 to 3 weeks of consistent use. If the respiratory signs persist or change character, such as a shift from clear to yellow or green discharge, the underlying pattern may have changed, and your veterinarian may recommend a different formula better suited to the current presentation.
Combination with complementary TCVM formulas is common in holistic veterinary practice and should be guided by your authorizing veterinarian based on your pet's full pattern diagnosis. Because this formula contains Xi Xin (Asarum), which requires appropriate dosing and duration management, particularly in pets with kidney considerations, and Ban Xia, which has specific preparation requirements, veterinary oversight is especially important if your pet is on cardiac medications, diuretics, or has pre-existing kidney or cardiac conditions, to ensure the treatment plan is appropriate for your pet's overall health status.
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