Prepared Rehmannia Root Classic Formulas … Natural Herb Library

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Nourishes blood and enriches Yin ... Shu Di Huang is the classic processed Rehmannia lane for dizziness, pallor, scant menses, palpitations, and deficiency patterns rooted in blood and essence depletion.
Tonifies Kidney essence and fills the marrow ... it is used for tinnitus, weak low back, premature aging patterns, and reproductive depletion when essence is insufficient.
Supports menstrual and constitutional rebuilding ... traditional use includes irregular menses, infertility-pattern deficiency, and recovery from chronic depletion.

Si Wu Tang ... classic blood-nourishing formula where Shu Di Huang is the chief enriching herb.
Liu Wei Di Huang Wan ... foundational Kidney-Yin formula built around Shu Di Huang.
Zuo Gui Wan ... essence-and-marrow rebuilding formula for deep Kidney depletion.
Gui Shao Di Huang Wan ... gynecologic blood-and-Kidney formula extending the Shu Di Huang tradition.

Traditional processing texts emphasize repeated steaming and drying to transform raw Di Huang into the richer tonic Shu Di Huang form.
Materia medica teaching consistently assigns Shu Di Huang to blood, Yin, and essence depletion rather than the blood-heat and fluid-injury lane of raw Sheng Di Huang.
Shu Di Huang is one of the defining examples of how paozhi can change an herb's direction rather than merely making it easier to tolerate.