Corydalis's therapeutic uses

DEFINITION: Natural plant product used to treat specific health conditions.

PRINCIPAL PROPOSED USE: Pain relief (including peripheral neuropathy, painful menstruation, and pain caused by soft tissue injuries)

OTHER PROPOSED USES: Cataracts, heart arrhythmia, preventing blood clots, mental health, sedative, digestive issues, high blood pressure, inflammation

Overview

Widely used in Chinese herbal medicine, the herb corydalis has been said to alleviate pain by moving qi (energy) and stimulating the blood. These expressions refer to traditional concepts included within the complex theories of traditional Chinese herbal medicine. Regarding Western diagnostic categories, corydalis may be recommended for soft tissue injuries, menstrual discomfort, abdominal pain, sedation, and several other wide-ranging health issues. The part of the plant used medicinally is the rhizome (underground stalk). Corydalis contains bioactive alkaloids, which are responsible for its health benefits. 

94415727-90280.jpg94415727-90279.jpg

Therapeutic Dosages

Corydalis is usually taken at a dose of 5 to 10 grams daily or equivalent quantities of an extract.

Therapeutic Uses

There has been some evidence suggesting that corydalis or its constituents offer medicinal benefits. Corydalis contains a number of active and potentially dangerous chemicals in the alkaloid family, including tetrahydropalmatine (THP), tetrahydropapaverine, corydaline, protopine, tetrahydrocoptisine, tetrahydrocolumbamine, and corybulbine. Of these, THP may be the most active, as well as the most toxic.

Only double-blind, placebo-controlled studies can actually show that a treatment works, and these studies began to emerge in the twenty-first century relevant to corydalis. One trial tested THP as a treatment for a type of heart rhythm abnormality called supraventricular arrhythmia. Reportedly, the use of THP produced significant benefits compared with a placebo. However, this study was conducted in China, and there is considerable skepticism about the validity of Chinese medical trials. A study conducted in the early 2020s determined that corydalis may have analgesic properties, but more research on humans was needed.

Animal and test-tube studies have also hinted that THP or corydalis extracts might have pain-relieving, sedative, and anti-inflammatory effects. Corydalis constituents may also affect neurotransmitters in the brain, including dopamine and gamma-aminobutyric acid (GABA). Equally weak evidence hints at benefits for preventing or treating cataracts, reducing blood coagulation, and lowering blood pressure. However, none of this research remotely approaches the level of evidence that can prove a treatment effective. In the twenty-first century, researchers continued to look into the health benefits of corydalis, including possible positive effects on mental health, nerve damage, tremors, and constipation. Corydalis was also being investigated for its role in lowering blood pressure, preventing infections, and its anti-inflammatory properties. Considerations were also made regarding whether it could be used to relieve mild depression and anxiety and manage digestive issues.

Safety Issues

Traditionally, corydalis had not undergone significant safety testing; however, that was changing as more clinical studies were undertaken. The herb is known to produce immediate side effects, including nausea and fatigue, in some people. In addition, serious safety concerns related to its alkaloid constituent THP exist. The use of products containing THP has repeatedly been associated with severe and potentially fatal liver injury. In addition, there have been reports that the use of THP by young children has led to life-threatening suppression of the central nervous system. For these reasons, experts strongly recommend against the use of corydalis, especially by young children, pregnant or nursing women, and people with liver disease.

Bibliography

Alhassen, Lamees, et al. "The Analgesic Properties of Corydalis Yanhusuo." Molecules, vol. 26, no. 24, 2021, doi:10.3390/molecules26247498. Accessed 20 Sept. 2024.

Clark, Alena. "Corydalis: Uses, Side Effects, and More." Verywell Health, 6 Sept. 2024, www.verywellhealth.com/corydalis-benefits-4589168. Accessed 17 Sept. 2024.

"Corydalis—Health Information Library." PeaceHealth, 24 Mar. 2015, www.peacehealth.org/medical-topics/id/hn-2074006. Accessed 17 Sept. 2024.

McRae, C. A., et al. "Hepatitis Associated with Chinese Herbs." European Journal of Gastroenterology and Hepatology, vol. 14, 2002, pp. 559–62.

Picciotto, A., et al. "Chronic Hepatitis Induced by Jin Bu Huan." Journal of Hepatology, vol. 28, 1998, pp. 165–67.

Stickel, F., G. Egerer, and H. K. Seitz. "Hepatotoxicity of Botanicals." Public Health Nutrition, vol. 3, 2000, pp. 113–24.