Assertion: warfarin | /r/HasProperty | tricky drug
Facets:
Source sentences:
text: As anyone who has ever taken it knows, warfarin is a tricky drug.
text: Warfarin is a tricky drug to take, Bunch explained: People need regular blood tests to make sure their warfarin levels are in the "therapeutic range" -- high enough to prevent clots, but low enough to avoid internal bleeding.