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Black cohosh does not relieve menopausal hot flushes

BMJ 2006; 333 doi: https://doi.org/10.1136/bmj.333.7564.0-e (Published 17 August 2006) Cite this as: BMJ 2006;333:0-e

Research question Is black cohosh an effective treatment for menopausal hot flushes?

Answer No. A standardised preparation of black cohosh works no better than a placebo

Why did the authors do the study? Many women take black cohosh for menopausal hot flushes. It's a particularly attractive option for women who can't take hormone replacement therapy because they have had breast cancer or have an increased risk of breast cancer. Results from small clinical trials have been mixed, however. These authors wanted more definitive data on the effectiveness of this popular herbal remedy.

What did they do? 132 women took part in a randomised, placebo controlled …

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