Xuan Hu Su Corydalis Root Classic Formulas … Natural Herb Library

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Invigorates Blood, moves qi, and relieves pain ... Xuan Hu Su keeps the classic corydalis role for stagnation pain in the chest, flanks, epigastrium, and lower abdomen.
Relieves menstrual, digestive, and traumatic pain ... the herb remains valuable when pain is fixed, distending, or clearly tied to obstructed movement.
Complements formula-based pain treatment ... corydalis is rarely the whole story, but it is often the herb that makes a stagnation-pain prescription feel clinically direct.

Jin Ling Zi San ... enduring corydalis pairing for constrained hypochondriac and epigastric pain.
Yan Hu Suo Zhi Tong Wan ... direct pain-relief formula lineage built around corydalis.
Shao Fu Zhu Yu Tang and related blood-stasis combinations ... settings where corydalis supports movement and pain relief in the lower abdomen.

The classical reputation of corydalis rests on moving both qi and blood, a combination that explains its wide pain range.
Xuan Hu Su belongs to that same raw Corydalis yanhusuo tuber tradition and should not be separated into a fictional second herb.