The mechanism by which the Spleen regulates Blood is mainly that Qi has a fixing (consolidating) effect, and Qi can take in Blood.
The fact that the Spleen is the main regulator of Blood means that the Spleen-Qi can consolidate the Blood so that it can run normally in the veins and not overflow out of the veins. Under normal circumstances, when Spleen Qi is abundant, it can regulate blood and prevent it from overflowing out of the veins.
However, when spleen qi is deficient, the ability to regulate blood decreases, blood does not circulate through the channels (blood does not circulate normally in the veins) and overflows out of the veins, which can be seen in various kinds of hemorrhages, accompanied by poor appetite, poor mental health, yellowish color (yellowish and lusterless), shortness of breath and laziness, and lethargy. Such patients can take Gui Spleen Pills and so on.
The composition of Gui Spleen Pill includes Codonopsis, Atractylodes Macrocephalae, Poria, Polygala, Polygala, Astragalus, Angelica sinensis, Sour Jujubae Seed, Mucuna pruriens, Longan Flesh, Jujubae, and Glycyrrhiza Uralensis, and it has the function of strengthening the spleen and benefiting the qi, nourishing the blood, and tranquillizing the spirit (stabilizing the spirit and soothing the emotions by nourishing the blood), and it can be used in the syndrome of deficiency of the heart and the spleen (the heart and the spleen are both weak). Adverse effects of this drug include gastrointestinal discomfort, skin rash, etc. Contraindications are not yet clear.
If any discomfort occurs, one should consult a doctor in time to avoid self-medication, which may affect one’s health.