Doubleteeth Pubescent Angelica Root Classic Formulas

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Dispels wind-damp and alleviates pain - Du Huo is a classic herb for painful obstruction patterns, especially when aching, heaviness, and stiffness affect the lower back, hips, and legs.
Targets the lower body in wind-cold-damp patterns - compared with many other expelling herbs, Du Huo is especially valued when symptoms center below the waist.
Releases the exterior and treats headache - traditional use extends to headache from external wind-cold, particularly when body pain and dampness are also present.

Du Huo Ji Sheng Tang - the best-known Du Huo formula for chronic wind-cold-damp Bi with low-back and knee pain on a background of qi-blood and Liver-Kidney deficiency.
Qiang Huo Sheng Shi Tang family strategies - use Du Huo when exterior dampness and aching affect the body, especially the lower half.
Du Huo with Sang Ji Sheng and Niu Xi - traditional pairing logic when painful obstruction is chronic and centered in the low back and legs.

Traditional materia medica describe Du Huo as bitter, acrid, and slightly warm, used to dispel wind, overcome dampness, and relieve pain.
Its long-standing reputation for lower-body Bi syndrome explains why it remains one of the signature herbs for chronic low-back, hip, and leg pain in TCM practice.