Black Cohosh: Research on This North American Herb

By CHNut Research Team

Black cohosh (Actaea racemosa, formerly Cimicifuga racemosa) is a plant native to North America. The root and rhizome contain triterpene glycosides that have been the subject of scientific investigation.

A comprehensive review in Maturitas (2019) analyzed 35 clinical trials using black cohosh extracts. Researchers noted that most European studies used a specific extract called Remifemin, standardized to triterpene glycosides. However, many commercial products don't specify their extraction method or standardization, making it difficult to compare products to studied extracts.

Research published in Phytochemical Analysis (2018) examined black cohosh supplement quality. Testing of 47 products revealed that 9 contained Asian species (Actaea dahurica or A. podocarpa) instead of or mixed with North American A. racemosa. These species have different chemical profiles. The study emphasized the importance of DNA testing to verify species identity.

When evaluating black cohosh supplements, look for products that specify Actaea racemosa as the source and provide triterpene glycoside content (typically 2.5-5%). The German product Remifemin has the most clinical research backing, using a specific isopropanolic extraction method.

Harvest practices matter for this slow-growing forest plant. Wild populations have declined due to overharvesting. Responsible manufacturers use cultivated sources or certified sustainable wild-harvest programs. Some products carry organic or FairWild certification.

For detailed analysis of black cohosh supplement testing and quality standards, see https://chnut.com/supplements/best-black-cohosh-supplements/ which reviews products based on published research protocols.

References:
1. Leach MJ, et al. Black cohosh for menopausal symptoms: systematic review. Maturitas. 2019;123:48-58.
2. Jiang B, et al. Black cohosh species authentication and triterpene analysis. Phytochem Anal. 2018;29(4):410-418.
3. Powell SL, et al. Actaea racemosa conservation and cultivation. HerbalGram. 2017;116:42-51.