Herbsmith Rehmannia Tonify Yin supports the athletic nature of the horse and manages fatigue in the equine athlete.


This elegant combination of herbs is excellent for supporting the athletic horse. Every horse in competition needs to be supported to perform to his or her very best, and this blend can do that. When horses are pushed in an active show schedule, fatigue tends to develop with time. Fatigue of this type may manifest as a generalized weakness, especially of the lower back and the limbs. The Herbsmith Rehmannia Tonify Yin formula tonifies the yin, supports the balance between yin and yang and maintains the athletic nature of the horse during an active show schedule. This is an excellent herbal combination to manage fatigue and generally support the equine athlete.

Available In:

  • 500 g Powder
  • 900 g Powder
  • 1200 g Powder
  • Flax Plus 30 day supply
  • Flax Plus 60 day supply

Chinese Theory

Yang is generally described as outward, aggressive, active and essentially athletic in nature. Yin is described as inward, passive, fluids and essentially time-at-the-barn-relaxing in nature. This is a perfect blend for tonifying kidney and liver yin. When kidney yin is depleted due to stress, a general weakness of the skeletal system develops, especially in the lower back and legs. When liver yin is depleted the blood is affected and heat tends to be generated. Long-term yang to yin imbalance causes fatigue and increased susceptibility to other diseases and dysfunctions. In the athletic horse where yang is the primary nature, supporting the yin can provide the balance for optimal show performance and for general good health.

Suggested Use

(For the 1000 lb Horse)

Traditional Formulas: Administer two (2) tablespoons twice daily for the initial twenty days. Then, administer two (2) tablespoons once a day therafter. Note: In the event the horse refuses to eat herbs, start with small amounts in the grain until the horse is acquainted with the taste or try the Flax Plus version of this formula. Almost all horses will eat the herbs in their grain.

Flax Plus: Administer one (1) scoop twice daily for the initial twenty days. Then, administer one (1) scoop daily. Six tablespoon scoop included.

Precautions:Can be used for long-term.


  • Radix Rehmanniae Glutinosae Conquitae – shu di huang – Cooked Rehmannia root
  • Fructus Corni Officinalis – shan zhu yu – Cornus fruit
  • Radix Dioscoreae Oppositae – shan yao – Chinese yam
  • Sclerotium Poriae Cocos – fu ling – Poria
  • Cortex Moutan Radicis – mu dan pi – Moutan bark
  • Rhizoma Alismatis Orientalis – ze xie – Alisma tuber

  • Inactive Ingredients (in Flax Plus only):Ground Flax Seed