An anticoagulant drug (brand
names: Coumarin, Panwarfin, Sofarin) taken to prevent the blood from clotting and to treat blood clots and overly thick blood. Warfarin is also used to
reduce the risk of clots causing
strokes or heart attacks.
Warfarin works by suppressing the production of some clotting
factors (interfering with prothrombin activation) and thereby
inhibiting the clotting of blood.
Warfarin interacts with many other drugs, including some vitamins.
These interactions can be dangerous, even life-threatening. If you are taking Warfarin, talk
to your doctor before taking any other prescription or
over-the-counter medications.
University of Wisconsin biochemistry professor Karl Paul Link and his co-workers first isolated dicoumarin, a molecule in spoiled sweet clover that causes cattle to hemorrhage and die. The discovery led to the synthesis of Dicumarol, the first anticoagulant drug that could be taken orally. The successor to Dicumarol was Warfarin.
Warfarin is named after WARF, the
W
isconsin
A
lumni
R
esearch
F
oundation, to which Professor Link assigned the patent. Warfarin was originally marketed as a rodenticide (the rats bleed to death). Its effectiveness in controlling pestilent rats and mice led to great commercial success. Warfarin has, in addition, become the most widely prescribed anticoagulant drug for people and saved countless lives.
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