Other Name(s):

Corydale, Corydale Bulbeuse, Corydale Creuse, Corydale à Tubercule Creux, Corydalis cava, Corydalis tuberosa, Corydalis Yanhusuo, Corydalis Yanhusuo Rhizome, Dai Ding, Early Fumitory, Fumeterre Creuse, Squirrel Corn, Yanhusuo, Yuan Hu Suo.


Corydalis is a plant. People use the tuber and root for medicine.

Corydalis is used for mild depression, mild mental disorders, emotional disturbances, severe nerve damage, and limb tremors. It is also used as a mild sedative and tranquilizer, as a hallucinogen, to lower blood pressure, and to relax spasms in the small intestine.

How does it work?

There isn't enough information to know how corydalis might work.


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Uses & Effectiveness

Insufficient Evidence to Rate Effectiveness for...

  • Mild depression.
  • Mental and emotional disturbances.
  • Severe nerve damage.
  • Tremors.
  • High blood pressure.
  • Intestinal spasms.
  • Other conditions.
More evidence is needed to rate the effectiveness of corydalis for these uses.

Natural Medicines Comprehensive Database rates effectiveness based on scientific evidence according to the following scale: Effective, Likely Effective, Possibly Effective, Possibly Ineffective, Likely Ineffective, and Insufficient Evidence to Rate (detailed description of each of the ratings).

Side Effects

It is not known if using corydalis is safe. When too much is taken, corydalis can cause spasms and muscle tremors.


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Special Precautions & Warnings

Pregnancy and breast-feeding: It's UNSAFE to take corydalis if you are pregnant. It might start your period and cause the uterus to contract. This could cause a miscarriage.

Breast-feeding: Not enough is known about the safety of using corydalis if you are breast-feeding. It's best to avoid using it.


The appropriate dose of corydalis depends on several factors such as the user's age, health, and several other conditions. At this time there is not enough scientific information to determine an appropriate range of doses for corydalis. Keep in mind that natural products are not always necessarily safe and dosages can be important. Be sure to follow relevant directions on product labels and consult your pharmacist or physician or other healthcare professional before using.

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Report Problems to the Food and Drug Administration

You are encouraged to report negative side effects of prescription drugs to the FDA. Visit the FDA MedWatch website or call 1-800-FDA-1088.


[Radix Salviae miltiorrhizae-Rhizoma Corydalis decoction and nicotinic acid solution iontophoresis to the precordium in the treatment of angina pectoris]. Zhonghua Yi.Xue.Za Zhi. 1974;3:166-168. View abstract.

Chen, Q. M., Ye, Y. C., and Xu, Z. J. [Experimental study on the effect of Corydalis stricta Steph. against Echinococcus granulosus protoscolices in man]. Zhonghua Wai Ke.Za Zhi. 1986;24(12):768-9, 783. View abstract.

Chen, Q. M., Ye, Y. C., Xu, Z. J., Kou, X. C., and Chai, F. L. [Electron microscopic studies on the effect of Corydalis stricta Steph on human Echinococcus granulosus and protoscolices]. Zhongguo Ji.Sheng Chong.Xue.Yu Ji.Sheng Chong.Bing.Za Zhi. 1987;5(4):281-3, 16. View abstract.

Choi, S. U., Baek, N. I., Kim, S. H., Yang, J. H., Eun, J. S., Shin, T. Y., Lim, J. P., Lee, J. H., Jeon, H., Yun, M. Y., Leem, K. H., Park, H. W., and Kim, D. K. Cytotoxic isoquinoline alkaloids from the aerial parts of Corydalis incisa. Arch.Pharm.Res. 2007;30(2):151-154. View abstract.

Huang, X. N., Liu, G. X., and Zhang, Y. [Tranquillizing effects of total alkaloids of Corydalis saxicola (author's transl)]. Zhongguo Yao Li Xue.Bao. 1981;2(3):156-159. View abstract.

Kim, H. R., Min, H. Y., Jeong, Y. H., Lee, S. K., Lee, N. S., and Seo, E. K. Cytotoxic constituents from the whole plant of Corydalis pallida. Arch Pharm Res 2005;28(11):1224-1227. View abstract.

Li, H. L., Zhang, W. D., Liu, R. H., Zhang, C., Han, T., Wang, X. W., Wang, X. L., Zhu, J. B., and Chen, C. L. Simultaneous determination of four active alkaloids from a traditional Chinese medicine Corydalis saxicola Bunting. (Yanhuanglian) in plasma and urine samples by LC-MS-MS. J Chromatogr.B Analyt.Technol.Biomed.Life Sci. 2-2-2006;831(1-2):140-146. View abstract.

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Yuan, C. S., Mehendale, S. R., Wang, C. Z., Aung, H. H., Jiang, T., Guan, X., and Shoyama, Y. Effects of Corydalis yanhusuo and Angelicae dahuricae on cold pressor-induced pain in humans: a controlled trial. J.Clin.Pharmacol. 2004;44(11):1323-1327. View abstract.

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