Vials from nine batches of Roche's (RHHBY) top-selling drug allegedly stolen in Italy have been tampered with and reintroduced into the European market. Adulterated vials have turned up in Germany, Finland and the U.K. Some do not contain any trastuzumab at all while others have been diluted.
There are no reports of harm to patients from the fakes. The company is recalling the suspect vials as a precaution.
Herceptin sales last year were $6.9B.