Main Differences between Sijunzi Decoction and Shenqi Baishu Powder

The main difference between Sijunzi Decoction and Shenqi Baishu Powder resides in their therapeutic applications. Sijunzi Decoction stands as a foundational formula for addressing spleen and stomach qi deficiency, whereas Shenqi Baishu Powder targets spleen and stomach qi deficiency accompanied by dampness. Despite these disparities, they exhibit numerous similarities. Both formulations stem from the same medical text and incorporate identical ingredients: ginseng, poria cocos, atractylodes macrocephala, and prepared licorice, all of which contribute to invigorating qi and fortifying the spleen.

I. Similarities

Both formulas are derived from the esteemed "Taiping Huimin Hejiju Fang" (Prescriptions of the Bureau of Peaceful Relief for the Common People). They share a commonality in utilizing ginseng, atractylodes macrocephala, poria cocos, and prepared licorice to bolster qi, strengthen the spleen, and alleviate syndromes associated with spleen and stomach qi deficiency.

II. Differences

1. Shenqi Baishu Powder: This formula is augmented with yam and lotus seed to invigorate the spleen and alleviate diarrhea,扁豆 and coix seed to invigorate the spleen and dispel dampness, amomum to awaken the spleen, harmonize the stomach, promote qi circulation, and dispel stagnation, and platycodon to open and disperse lung qi, facilitating the upward movement of medicine. Its repertoire of functions encompasses invigorating qi, strengthening the spleen, dispelling dampness, and halting diarrhea. It is primarily prescribed for treating syndromes of spleen deficiency coupled with dampness, manifested by symptoms such as mental exhaustion, lethargy, poor appetite, loose stools, a yellowish complexion, a white and greasy tongue coating, and a weak and sluggish pulse.

2. Sijunzi Decoction: Similarly, this formula employs ginseng, atractylodes macrocephala, poria cocos, and prepared licorice to invigorate qi and fortify the spleen. Its core functions revolve around invigorating qi and strengthening the spleen, rendering it a primary choice for treating syndromes of spleen and stomach qi deficiency. Key diagnostic indicators include a pale complexion, mental fatigue, diminished appetite, loose stools, a pale tongue with a white coating, and a weak pulse.

III. Key Distinctions

Both formulas address syndromes related to spleen and stomach qi deficiency. However, Shenqi Baishu Powder is specifically tailored for syndromes where this deficiency is accompanied by dampness, whereas Sijunzi Decoction serves as the cornerstone formula for treating spleen and stomach qi deficiency in its purest form.