Overview
Coumadin was a prescription drug approved by the U.S. Food and Drug Administration (FDA) to treat and prevent thromboembolic events. Coumadin was also referred to by its drug name, warfarin.

Coumadin was an anticoagulant, or blood thinner. It was believed to work by inhibiting the formation of clots.

How was it taken?
Coumadin dosage was individualized based on many factors.

Coumadin came in the form of tablets and single-use vials for injection.

Side effects
The FDA-approved label for Coumadin listed common side effects including fatal and nonfatal hemorrhages.

Rare but serious side effects listed for Coumadin included tissue necrosis, thrombocytopenia (lack of platelets that can lead to dangerous bleeding), and systemic atheroemboli and cholesterol microemboli (dangerous blood clots).

For more details about this treatment, visit:
Warfarin — Drugs.com