Tao Hong Si Wu Tang is a dynamic modification of the classic blood-nourishing formula Si Wu Tang, designed to both enrich and invigorate the blood. By combining the traditional quartet of Dang Gui, Shu Di Huang, Chuan Xiong, and Bai Shao with the blood-moving power of Tao Ren and Hong Hua, this formula simultaneously nourishes deficiency and dispels stasis. Traditionally, it has been used for conditions marked by menstrual irregularity, abdominal pain, or postpartum weakness complicated by blood stasis. In modern terms, Tao Hong Si Wu Tang supports healthy circulation, reduces stagnation-related pain, and restores vitality to tissues with poor perfusion. Within the context of Lingering Pathogenic Illness, it may be particularly useful where immune dysregulation or chronic inflammation has led to impaired microcirculation, cold extremities, or menstrual disturbance. By balancing nourishment with movement, this formula addresses both the root and branch—replenishing what is depleted while clearing what obstructs.