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Your Environment. Your Health.

Black Cohosh Study

Closed for Recruitment

Study Background

Additional Information

Postdoc running gel
Study Flyer(878KB)

Black Cohosh is an herbal supplement taken by some women to treat hot flashes, cramps, or other symptoms.

Researchers are studying the health effects of black cohosh in women who have been taking the supplement for at least 3 months.

Researchers are investigating how black cohosh affects folate and B12 levels, anemia, chromosomal damage in red blood cells, and metabolomics profiles.


This study has completed enrollment. 

• Female age 18 and older
• Not pregnant or breastfeeding
• Currently, and have been taking a Black Cohosh supplement for at least 3 months

What will you do?

  • Visit the NIEHS Clinical Research Unit in Research Triangle Park, NC for a one-hour study visit.
  • Donate blood and provide a urine sample.

Why Participate? 

  • To be part of a research project to help scientists at NIEHS understand the health effects of black cohosh.
  • Participants will receive monetary compensation of $50 for providing samples for this research project.

Study Location

Sample collections are conducted at the NIEHS Clinical Research Unit located in Research Triangle Park, North Carolina.

Protocol Number: 10-E-0063

Enrollment and Contact Information

Nicole Edwards
Study Coordinator
Clinical Research Unit (CRU)
Tel (919) 316-4976
Nicole P. Edwards

Principal Investigator

Kristine L. Witt, M.S.
Kristine L. Witt, M.S.
Health Science Evaluator, Group Leader
Tel 984-287-3208
P.O. Box 12233
Mail Drop K2-17
Durham, N.C. 27709
Rebecca L. Church, Clinical Research Coordinator
Tel 984-287-4421
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