Eli Lilly and its partner Daiichi SankyoÂ moved swiftly to try and contain any damage from the news that they were suspending dosing in two small trials of the blood clot preventer prasugrel--one of Lilly's most closely watched experimental programs. Officials insisted that the suspension--which was made to consider an adjustment of dosages for certain patients--would have no effect on their development timeline. That wasn't enough for investors, though, who pushed down Lilly's stock by four percent on the news. Prasrugel is considered a key program for Lilly's future, with the potential to compete against the blockbuster Sanofi-Aventis' Plavix--which earned $6 billion last year.
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