Padauk Heartwood Chips Classic Formulas … Natural Herb Library

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Moves qi and relieves pain ... this narrower aromatic wood lane is used for focal chest or abdominal discomfort when stagnation and cold are part of the presentation.
Warms the middle and opens constrained movement ... traditional handling leans more toward aromatic wood shavings and chips than toward dense carved heartwood blocks.
Represents a small trade-form lane within padauk and red-sandalwood commerce ... it is better understood as a specialty aromatic medicament than as a core mainstream Chinese herb.

Modified qi-stagnation and cold-pain prescriptions ... traditional use is more often as a supporting aromatic wood than as the sovereign herb of a famous formula.
Combinations with Mu Xiang, Xiang Fu, or Yan Hu Suo ... common logic when pain reflects stagnation and impaired movement rather than deficiency alone.
Small patent and regional dispensing traditions using fragrant heartwood chips ... reflecting a narrower trade lane than the better-known mainstream aromatic woods.

Modern Chinese and regional materia medica references describe Zi Tan Xiang as an aromatic warming wood used to regulate qi, warm the middle, and relieve pain.
The present record is intentionally conservative because wood nomenclature in commerce can blur aromatic red-sandalwood and padauk identities.