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Herbsmith Rx You Gui San is a classical Chinese herbal formula recommended by holistic veterinarians to support kidney yang, essence, and blood in dogs, cats, and horses. Based on the traditional formula You Gui Wan (also known as Restore the Right, Replenish the Right Powder, Eucommia and Rehmannia Formula, and Eucommia and Rehmannia Combination), it warms and tonifies kidney yang, replenishes essence, and tonifies blood. It is well suited for pets presenting with kidney yang vacuity signs such as cold limbs, low energy, weakness of the lower back and hindquarters, frequent urination, poor appetite, or a pale and cold constitution. 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: Fu Zi (Radix Lateralis Aconiti Carmichaeli Praeparata), Rou Gui (Cortex Cinnamomi Cassiae), Lu Jiao Jiao (Colla Cornu Cervi), Shu Di Huang (Radix Rehmanniae Glutinosae Conquitae), Shan Zhu Yu (Fructus Corni Officinalis), Shan Yao (Radix Dioscoreae Oppositae), Gou Qi Zi (Fructus Lycii), Tu Si Zi (Semen Cuscutae Chinensis), Du Zhong (Cortex Eucommiae Ulmoidis), Dang Gui (Radix Angelicae Sinensis)
Inactive Ingredient: Flaxseed
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You Gui San builds on the foundational Right-Restoring formula by combining kidney yang warming herbs with essence and blood tonics, creating a comprehensive formula for kidney yang vacuity with concurrent yin and blood deficiency:
You Gui San contains potent yang-warming herbs including Zhi Fu Zi (prepared aconite) and Rou Gui, alongside blood-tonifying herbs such as Dang Gui and Lu Jiao Jiao. 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 anticoagulant or antiplatelet medications, cardiac medications, thyroid medications, immunosuppressive drugs, and pets managing multiple concurrent prescriptions. 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, You Gui San is indicated for kidney yang vacuity patterns presenting as cold limbs, low energy, weakness or stiffness of the lower back and hindquarters, frequent or clear urination, poor appetite, a pale tongue, and a general cold and deficient constitution. It is a good alternative to Restore the Right, Replenish the Right Powder, Eucommia and Rehmannia Formula, and Eucommia and Rehmannia Combination, and is appropriate for pets with a chronic or constitutional kidney yang deficiency rather than acute excess conditions.
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 tonifying formula addressing a constitutional kidney yang deficiency, You Gui San works gradually over time. Many pets show improvement in energy, warmth, and hindquarter strength within 4 to 8 weeks of consistent use. Chronic or deeply rooted kidney yang vacuity patterns may require a longer course of treatment, and your veterinarian may recommend periodic reassessment to adjust the formula or dosing as your pet responds.
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 potent yang-warming herbs, including prepared aconite (Zhi Fu Zi), veterinary oversight is especially important if your pet is on cardiac medications, anticoagulants, or thyroid medications, to ensure the treatment plan fits your pet's overall health status.
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