“Pi” (commonly translated as Spleen with a capital s) is not an organ per se. It is a complex system and is related to the ability of the body to take in and process nutrients. By "up-bearing the clear," taken from classical Oriental medical thought, the Spleen transforms all types of foods, physical and non-physical, into a useable nutrient for the body/mind. As such, it is absolutely essential as a system and could not possibly be removed. It is this concept of the Oriental medical Spleen that is referred to in this article.

OHCO's Stomach Chi formula provides deep nourishment of the Spleen. The Spleen (Pi) and the Spleen's related system that is usually translated as Stomach (Wei) are considered by some ancient physicians and scholars as the functional center of the human organism, and any associated weakness of the Pi Wei is seen as the root of all disease. In order to improve health, the body must be nourished at its deepest levels. A healthy body can be more effective in fighting disease than well-intentioned outside intervention.