Chinese Tamarisk Twig

Traditional Use

Primary Actions

• Releases the exterior and dispels wind - Xi He Liu is used for early-stage exterior wind presentations, especially when light sweating and venting are needed without harsh dispersal.
• Promotes measles eruption - the twig has a classic role when measles or other rash illnesses do not vent smoothly to the exterior and heat remains constrained beneath the surface.
• Resolves toxicity and relieves itching - internal or external use is described for pruritic skin conditions, damp-toxic irritation, and toxic swellings with prominent itching.
• Unblocks channels in wind-damp pain - some regional sources also note use for rheumatic aching and painful obstruction, especially when the exterior and superficial collaterals are involved.

Secondary Actions

• Xi He Liu is gentler than stronger sweating herbs and is often selected when the therapeutic goal is to guide a pathogen or rash outward rather than to strongly scatter cold or heat.
• Because one of its best-known uses is for measles eruption, older sources discuss it mainly in staged pediatric or febrile-disease contexts rather than as an all-purpose common-cold herb.

Classic Formulas

• Xi He Liu with Niu Bang Zi, Chan Tui, and Bo He - eruption-promoting pairing logic for incomplete measles expression or wind-heat rash that remains trapped under the surface.
• Zhu Ye Liu Bang Tang - traditional formula logic in which Xi He Liu helps vent the exterior and guide rash outward while accompanying herbs clear heat and throat toxicity.
• External Xi He Liu wash with Ku Shen or Bai Xian Pi - folk and regional approach for itchy skin, superficial toxic lesions, or damp-wind irritation.

Classical References

• TCM Wiki describes Xi He Liu as sweet, acrid, and neutral, entering the Lung, Stomach, and Heart channels, with actions of inducing diaphoresis and promoting measles eruption.
• American Dragon adds traditional indications such as common cold, rheumatic arthralgia, and pruritic eruptions, illustrating the twig's overlap between exterior release and superficial detoxifying use.
• Later herb summaries repeatedly emphasize that Xi He Liu is best known when rash illness is not venting properly, which keeps its clinical identity distinct from stronger diaphoresis herbs.