In Traditional Chinese Medicine theory, "deficiency syndromes" are common manifestations of sub-health states, often classified into qi deficiency, blood deficiency, yang deficiency, and yin deficiency, which have distinct characteristics yet often influence each other. Individuals with qi deficiency often experience fatigue, lack of vitality, and weak voice; blood deficiency is commonly characterized by pale complexion, pale lips and nails, dizziness, and disturbed sleep; yang deficiency is typically marked by aversion to cold, cold hands and feet, and frequent diarrhea; while yin deficiency is often accompanied by dry mouth and throat, heat in palms and soles, night sweats, and dry stools.

For such complex deficiency patterns, Traditional Chinese Medicine has a classic formula called "Ren Shen Yang Rong Tang" (Person Ginseng Nourishing Decoction). This formula is ingeniously designed, combining "Si Wu Tang" (Dang Gui, Bai Shao, Shu Di Huang) for blood nourishment and "Si Jun Zi Tang" (Ren Shen, Bai Zhu, Fu Ling, Gan Cao) for qi tonification, achieving dual replenishment of qi and blood. Additionally, the formula incorporates Astragalus for enhanced qi tonification, Cinnamon Bark for warming and tonifying kidney yang, Schisandra and Polygala for nourishing yin and calming the spirit, and finally, Tangerine Peel for regulating qi and preventing excessive nourishment from causing stomach and spleen stagnation.

The formula addresses Qi, blood, Yin, and Yang, providing nourishment without dryness and enriching without greasiness. It is suitable for comprehensive weakness caused by the combination of Qi and blood deficiency with Yin and Yang insufficiency, such as fatigue, palpitations, insomnia, aversion to cold with cold limbs, and alternating episodes of hypothermia with internal heat and restlessness.

In a clinical case, a female patient around fifty years old, who had been overworked for a long time, presented with lackluster complexion, cold hands and feet in autumn and winter, but hot palms and soles in summer. She experienced poor sleep and frequent dry mouth. She felt exacerbation of internal heat after taking tonics and diarrhea after consuming cold foods. The syndrome was diagnosed as deficiency of Qi, blood, Yin, and Yang. The original formula of Ren Shen Yang Rong Tang was slightly modified and adjusted. After taking the medicine for two weeks, her spirits and sleep significantly improved, and the conflicting sensations of feeling cold and internal heat also reduced considerably.

It should be noted that although the formula has a broad scope of application, it is primarily intended for deficiency syndromes. Individuals with internal heat, damp-heat, or external fever should not use this formula. It is recommended to apply it under the guidance of a physician for better efficacy.