The main pharmacological action of Astragalus membranaceus is "invigorating qi and consolidating exterior", which can "benefit water" and "nourish toxin and promote granulation". Astragalus membranaceus can be used in any situation that Chinese medicine considers as "qi deficiency", "deficiency of both qi and blood" and "discomfort of middle qi".

Take Zuogui Pill, a prescription for nourishing yin and strengthening yang, nourishing yin and tonifying kidney, and replenishing essence and marrow.