Corydalis Powder (Yanhusuo)
Corydalis is a genus of about 470 species of annual and perennial herbaceous plants in the Papaveraceae family, native to the temperate Northern Hemisphere and the high mountains of tropical eastern Africa. They are most diverse in China and the Himalayas, with at least 357 species in China.
Corydalis may be helpful in relieving mild muscle and nerve pain. (Livestrong.com)
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