Xi Dang Root Classic Formulas … Natural Herb Library

Primary Actions

Supports Spleen and Lung Qi in the ordinary Dang Shen family lane ... Xi Dang is used for fatigue, weak appetite, loose stool, and soft deficiency cough.
Generates fluids and assists recovery after illness ... like other Codonopsis roots, it is valued when weakness and mild dryness coexist.
Gently supports blood and pulse through Qi restoration ... traditional use extends to pale fatigue, mild palpitations, and convalescent depletion.
Serves as a trade and regional presentation of Dang Shen rather than as a different tonic species ... the emphasis is on cleaner, slimmer roots rather than a different function set.

Si Jun Zi Tang and Shen Ling Bai Zhu San style formulas ... Xi Dang serves the same broad qi-tonic role when this particular trade grade is dispensed.
Convalescence formulas with Huang Qi, Bai Zhu, or Shan Yao ... traditional pairing logic for digestive weakness and depleted Qi.
Lung-Spleen support combinations with Mai Dong or Wu Wei Zi ... used when weak cough and dryness sit on a fatigue background.

Chinese trade language distinguishes eastern, western, Tai, Lu, and other Dang Shen grades mainly by origin, form, and quality rather than by creating wholly separate herb families.
Xi Dang therefore belongs inside the larger Dang Shen tradition even though the market recognizes it as a distinct dispensing lane.