Gui Zhi Jia Huang Qi Tang modified(LPI) is designed for individuals with unstable protective Qi, poor circulation, and hypersensitivity to temperature, pressure, or exertion. It is especially helpful for those who experience spontaneous or easy sweating, frequent colds or flares after minimal exposure, lingering low-grade fevers, fatigue with a heavy or achy body(stiff neck and upper back), nasal congestion, dry heaves and nausea, and a tendency toward allergic or inflammatory overreaction. This formula is well-suited to people with dysregulated immune boundaries - those who are both depleted and reactive. By strengthening surface-level Qi and warming the channels, while gently stabilizing the exterior, it helps reduce vulnerability to triggers, support post-viral recovery, and regulate the interface between immune defense and autonomic tone.