Black cohosh

Black cohosh - also known as Cimicifuga racemosa, Black snakeroot, Bugbane, Macrotys or Squaw root  - is a traditional herbal medicine product used for the relief of symptoms associated with the menopause. These include hot flushes, night sweats, poor sleep, mood changes and irritability.

It is the second most popular herbal ingredient in the UK.

Black cohosh is registered with the UK medicines regulator MHRA under the Traditional Herbal Registration (THR) scheme. This does not mean the regulator has tested products which contain it to prove it works or that claims about it have been verified by clinical studies. However, it does mean black cohosh has been confirmed as being used as a traditional medicine for at least 30 years - and 15 years in the EU. Registration also confirms that the manufacturer of product is meeting established standards of safety and quality.

Some studies have found evidence that black cohosh does help with menopause symptoms. However, many experts consider the evidence unclear and say that we need more research.

Black cohosh warnings

Women using black cohosh are warned to ensure they use effective contraception while taking it. If menopause symptoms do not improve after three months, they should consult a doctor. It should not be taken by anyone with a sensitivity to black cohosh, women with an oestrogen dependent tumour or anyone with current or past liver disease. It should not be taken by women who are breastfeeding or attempting to get pregnant.

Anyone experiencing liver problems - including jaundice, dark urine or fatigue - while taking black cohosh should stop taking it immediately and seek medical advice.