A herb commonly sold in cold and flu supplements may no longer be classified as “low-risk”, after Australia’s therapeutic goods regulator found it can cause severe allergic reactions and even death.

Andrographis paniculata belongs to the family Acanthaceae. It is an erect branched annual. The leaves are lanceolate and the flowers are small, white with a rose coloured mark. The seeds are many, ...

Sarah Knapton is the Science Editor of The Telegraph and has covered all areas of science since 2013. She has previously been named Science Journalist of The Year, was Highly Commended at the Society ...