Table 1.

Duration of activity of selected VKAs

AgentHalf-life
Warfarin 17-48 h 
Difenacoum 11.5 d 
Chlorphacinone 3.3-23 d 
Brodifacoum* 16-36 d 
AgentHalf-life
Warfarin 17-48 h 
Difenacoum 11.5 d 
Chlorphacinone 3.3-23 d 
Brodifacoum* 16-36 d 

Adapted from King and Tran3 and King et al.22 

*

Brodifacoum has been observed to be present in humans for up to 270 d after acute exposure.

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