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Blood (Xue) represents the tissue of the mental and physical life of the organism. Three Yin Organs (Spleen, Liver, and Kidney) function in concert to generate, distribute and store the Blood. The Kidney stores and supplies the Essence which is the basis of Blood and forms the Marrow (the unifying substrate of bone, bone marrow, brain and spinal cord). The Liver stores and nourishes the Blood: it gathers and contains the Blood allowing it to receive the Essence from the Kidney. Finally, the Liver also assists the Spleen in its role of generating Nutritive Essence (Ying) which is carried by the Blood and supplements the Yin Essence (Jing) of the Kidney.
Tonify Red River nourishes Essence which supports the Kidney, Liver, Spleen and, to a lesser degree, the Heart. The Heart depends upon the Blood which gives the Mind (Shen) its material basis.

RATIONALE

Prepared Rehmannia root, Dong quai root, Spatholobus stem and White peony root replenish Blood. White peony root, Lycium fruit and processed Polygonum multiflorum root supplement Essence and Blood, supporting the Kidney and Liver. Longan aril and Astragalus root strengthen the Heart and Spleen by calming the Mind (Shen), nourishing Blood and invigorating Qi. Qi is necessary in order for Nutritive Qi and Blood to be formed. Dong quai root and Spatholobus stem also help Blood circulate which prevents stagnation. Charred Chinese hawthorn fruit supports digestion of the rather rich and sticky herbs that nurture Blood. In combination, these herbs nurture and restore the Blood and augment Essence, while sustaining the Kidney, Liver, Heart and Spleen.