A modern Chinese formula designed to relieve sciatic nerve pain, lower back pain, and joint stiffness in the lower body. It works by clearing blockages in the channels, improving blood circulation, reducing inflammation and pain, and strengthening the kidneys and bones. It is most commonly used for pain that radiates from the lower back through the hip and down the leg.

Sciatica and lower body pain addressed by this formula arise from a combination of external pathogenic factors and internal deficiency. Wind, Cold, and Dampness invade the lower back and legs, lodging in the channels and collaterals (especially the Bladder and Gallbladder channels that traverse the buttocks, posterior and lateral thighs, and legs). These pathogens obstruct the free flow of Qi and Blood through the channels, and the classical principle "where there is obstruction, there is pain" (不通则痛) applies directly.

Over time, or in patients with pre-existing weakness, the Kidneys and Liver become depleted. Since the Kidneys govern the bones and the lower back, and the Liver governs the sinews, their insufficiency means the lumbar region and lower extremities lack nourishment. The sinews become stiff, the bones become fragile, and the channels become more vulnerable to pathogenic invasion. Blood stasis then develops as a secondary consequence of prolonged channel obstruction and deficiency, creating a vicious cycle where stagnant Blood further blocks the channels and worsens pain, numbness, and weakness.

The formula addresses this by simultaneously removing the obstructions (dispelling Wind-Dampness, invigorating Blood, opening the channels) while supporting the root deficiency (tonifying the Kidneys, nourishing Blood, strengthening the sinews and bones). This dual approach of treating both the root and the branch is essential for conditions that are both excess (obstruction) and deficient (Kidney-Liver weakness).