Astragalus, known as Huang Qi ("yellow leader"), was classified as a superior herb by Shen Nung, the legendary founder of Chinese herbal medicine, in a treatise dating to approximately 100 CE. It remains one of the most important tonic herbs in Traditional Chinese Medicine, traditionally used for fatigue, weakness, and supporting the body's overall vital energy.
Astragalus's modern research profile centers substantially on immune modulation, with a genuinely mixed body of evidence quality that an unusually direct independent evidence grading source addresses explicitly.
Astragalus has real laboratory evidence for immune stimulation and at least one genuinely well-designed recent positive trial: a triple-blind RCT of 64 nurses with post-COVID-19 chronic fatigue found astragalus root extract produced a statistically significant reduction in chronic fatigue prevalence.
The honest, broader limitation is stated with unusual directness by an independent evidence-grading source, which rates astragalus "1 Star — for an herb, supported by traditional use but minimal or no scientific evidence," noting "poor quality" among the preliminary Chinese trials. MSKCC similarly describes evidence for cancer-related fatigue as "limited." Given one genuinely well-designed recent positive trial, but an unusually direct low overall grade, "Limited" is the honest, appropriately weighted rating.
Dried root sliced and prepared as decoction (boiled tea); traditionally combined with other tonic herbs in Chinese herbal formulas.