MHRA, the UK regulator of medicinal products, has called for a voluntary withdrawal of black cohosh products due to potential contamination.
Contrary to the MHRA report the suspected contaminant Cimicifuga foetida
has actually been researched and is known to possess anti-viral,
antidepressant and anti-tumour activity, and has not shown any noted
Cimicifuga racemosa (now known as Actaea racemosa), according to the above report has been associated with hepatotoxic reactions despite research showing the opposite:
certainly not desirable however and I would urge members of the public to purchase licensed herbal products from reliable suppliers, or visit a herbalist...