Padauk Heartwood

Traditional Use

Primary Actions

• Dispels blood stasis and relieves pain ... Zi Tan is traditionally used for headache, heart-abdominal pain, traumatic injury, and lingering blood stasis discomfort.
• Stops bleeding and reduces swelling ... older use includes wound bleeding, toxic swellings, and external injury where powdered or rubbed wood is applied locally.
• Keeps the denser billet-and-grain lane ... compared with the paired aromatic chip record, this page follows the heavier heartwood presentation and more astringent pain-relief framing.

Secondary Actions

• This page should stay distinct from `wood-of-burmacoast-padauk` ... the two records intentionally preserve separate trade-form identities rather than collapsing all padauk-derived material into one vague wood page.
• Chinese commerce can blur `Zi Tan` with other rosewood or red-sandalwood materials, so the local illustration workflow deliberately anchored both pages to authenticated Pterocarpus indicus handling.

Classic Formulas

• Regional trauma and pain powders ... where Zi Tan is used for stasis pain, swelling, or bleeding rather than as a major mainstream formula herb.
• External application traditions for wounds and swellings ... reflecting the denser heartwood's local-use lane.
• Modified pain and blood-stasis combinations with Ru Xiang, Mo Yao, or Yan Hu Suo ... practical pairing logic when fixed pain is the main problem.

Classical References

• Chinese materia medica references describe Zi Tan as salty and neutral, entering the Liver to dispel stasis, stop bleeding, relieve pain, detoxify, and reduce swelling.
• Because the medicinal lane is relatively minor and nomenclature can drift, conservative sourcing and identity notes are more important here than for ordinary high-volume herbs.