Xuan Hu Corydalis Root Classic Formulas … Natural Herb Library

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Invigorates Blood, moves qi, and relieves pain ... Xuan Hu stays in the core corydalis role for obstructive pain patterns involving both distention and fixation.
Relieves pain in the chest, flanks, epigastrium, and lower abdomen ... it is especially relevant when constrained movement is more central than deficiency or inflammation alone.
Extends to traumatic and gynecologic pain ... Xuan Hu remains part of the same practical raw-tuber dispensing tradition used for blood-stasis and qi-stagnation pain.

Jin Ling Zi San ... constrained pain formula where corydalis helps move both qi and blood.
Yan Hu Suo Zhi Tong Wan ... established corydalis-centered pain formula lineage.
Shao Fu Zhu Yu Tang modifications and trauma pairings ... common contexts for corydalis when lower-abdominal or injury pain is driven by stasis.

Classical herbology places corydalis among the most versatile pain-relieving herbs precisely because it treats both qi stagnation and blood stasis.
Xuan Hu should be read as a naming shortcut within that same medicinal lineage.