The story of the pharma giant and the African yam

Editor’s Note: Over the next few weeks, we’re going to feature a series of articles discussing drug use in Africa. These articles originally appeared on The Conversation, but we’re republishing them here as well. Today’s article comes from William Beinart, professor at the University of Oxford. 

It was a drug produced in Nottingham in the United Kingdom that led us on a journey to South Africa to visit muthi markets, archives, herbariums and nature reserves.

We spoke with traders, healers, scholars and conservationists to learn more about Dioscorea sylvatica.

Dioscorea is a wild yam. Its name in different languages connects to its appearance – its rough skin resembles a tortoise shell. It’s known as ‘Elephant’s Foot’ in English, in isiZulu ‘ingwevu’, meaning grey/old or ‘ifudu’, meaning tortoise; in Sepedi the name is ‘Kgato’ – ‘to stamp’.

In the 1950s, the yam was heavily exploited by the British pharmaceutical firm Boots for the production of cortisone. But provincial conservation officials in South Africa fought back against the plundering of a wild plant that they recognised was in danger of being exploited to extinction.

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