Astragalus powder: Ancient Adaptogen, Longevity Hack, and the Critical Warnings You Must Know For thousands of years, Astragalus membranaceus, a flowering plant native to China, has been a cornerstone of Traditional Chinese Medicine (TCM), revered as a powerful “Qi Tonic” that supports Wei Qi (the body’s outer shield against pathogens) and Spleen Qi (responsible for nutrient transformation and transport). Modern research has identified over 200 active compounds, classifying Astragalus as a premi