Indivior Plunges as Drugmaker Warns of Falling Revenue, Profit

A box of Indivior's Suboxone medication.

Photographer: George Frey/Bloomberg

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Indivior Plc shares tumbled after the drugmaker warned of declining revenue and profit this year, amid competition for its opioid addiction medicines.

Revenue could fall almost 20% this year and operating profit as much as 41%, the UK company said in a statementBloomberg Terminal Thursday.