Shire shares plunge as rival moves in on ADHD treatment

Stocks in the FTSE 100 pharma firm, Shire, dropped sharply on Monday morning after it announced a rival had been given permission to make a generic version of its blockbuster treatment for Attention Deficit Hyperactivity Disorder (ADHD), Adderall XR.

By MoneyWeek

published 25 June 2012

in Features

Swiss firm Actavis has been given the all clear by the US Food and Drug Administration to manufacture a generic form of Adderall, which analysts at Nomura estimate is worth around 10% of Shire's total earnings per share.

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In announcing the news Shire admitted "there will be multiple dynamics affecting the overall market following the approval of the Actavis generic".

But the British company maintained it would "...deliver good, full-year 2012 earnings growth."

Nomura still rates Shire as a buy because 40% of its sales are exposed to the US ADHD market which grew at 9% over the last five years.

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