![]() News of FDA’s approval of Andexxa sent Portola’s stocks up more than 25 percent on Friday, May 4. But they can cause serious and fatal bleeding.Īccording to Portola, there have been nearly 2,000 deaths a month related to bleeding from Factor Xa inhibitor drugs. Xarelto and Eliquis are prescribed to reduce the risk of stroke. Xarelto and Eliquis work to limit clotting by inhibiting an enzyme called Factor Xa. Until now, there have been no antidotes to reverse this condition that led to about 117,000 hospital admissions in the U.S. ![]() to market Andexxa for patients taking Xarelto and Eliquis who experience serious, uncontrolled bleeding. At the same time, it carries its own risk of serious side effects.Īfter initially rejecting the drug, the FDA will allow Portola Pharmaceuticals Inc. The antidote has the potential to prevent thousands of deaths a month in the U.S. Food and Drug Administration has approved an antidote to the drug’s most dangerous side effect – uncontrolled bleeding. Seven years after the anti-clotting drug Xarelto entered the market, the U.S.
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