apix·a·ban | \ ə-ˈpik-sə-ˌban 
\
\Medical Definition of apixaban
: an anticoagulant drug C25H25N5O4 that inhibits the activated form of factor X and is taken orally in the prevention and treatment of thromboembolic disease (such as deep vein thrombosis)
Apixaban has been shown to be superior to warfarin, with reductions in the risk of bleeding and mortality, and for persons in whom warfarin has unacceptable adverse effects, apixaban has been shown to be superior to aspirin.— Stephen M. Davis and Geoffrey A. Donnan, The New England Journal of Medicine, 17 May 2012
Note: Apixaban is marketed under the trademark Eliquis.
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