What is the brand name for Warfarin?
The brand name for Warfarin is Coumadin.
PTCE Top 200 · #116
Warfarin
Coumadin
Warfarin is the generic name for the brand-name drug Coumadin. It is a vitamin k antagonist anticoagulant used to treat anticoagulation (afib, DVT). On the PTCE Top 200 drug list, Warfarin ranks #116 and is one of the most frequently tested cardiovascular medications — commonly quizzed on its brand–generic pair, drug class, and key side effects.
| Generic name | Warfarin |
|---|---|
| Brand name(s) | Coumadin |
| Drug class | Vitamin K antagonist anticoagulant |
| Class group | Cardiovascular |
| Common use | anticoagulation (afib, DVT) |
| DEA schedule | Unscheduled |
| Availability | Prescription only (Rx) |
What is Warfarin used for?
Vitamin K antagonist anticoagulant used to prevent and treat thromboembolism (e.g., DVT/PE) and reduce stroke risk in atrial fibrillation; used for mechanical heart valves.
What drug class is Warfarin?
Warfarin is a Vitamin K antagonist anticoagulant in the Cardiovascular group. Knowing the class is the fastest way to predict its uses, side effects, and the brand↔generic pairs the PTCE tests.
Common side effects of Warfarin
- arrow_rightBleeding
- arrow_rightEasy bruising
- arrow_rightNosebleeds
- arrow_rightGI bleeding
- arrow_rightHematuria
Major interactions
- arrow_rightMany drugs ↑ INR/bleeding (e.g., amiodarone, TMP‑SMX, metronidazole, many azole antifungals, some antibiotics)
- arrow_rightMany drugs ↓ INR (e.g., rifampin, carbamazepine) → clot risk
- arrow_rightNSAIDs/antiplatelets ↑ bleeding risk
- arrow_rightVitamin K intake changes (leafy greens) can alter INR—keep diet consistent
Is Warfarin a controlled substance?
No. Warfarin is not a federally controlled substance (it is unscheduled by the DEA).
warning Boxed warning
WARNING: BLEEDING RISK — can cause major or fatal bleeding; requires regular INR monitoring; many drugs/diet changes affect INR.
How to remember Warfarin (PTCE mnemonic)
COUM-adin = WARfarin WARs on vitamin K (factors 2,7,9,10). Goal INR 2-3 (AFib/DVT) or 2.5-3.5 (mech valve); consistent vit-K diet; vit-K antidote; teratogen.
lightbulb
PTCE exam tip
Warfarin is THE monitoring drug: INR goal 2–3, vitamin K as the reversal agent, and endless food/drug interactions — contrast with DOACs like apixaban that need no routine INR.
Warfarin FAQ
What is Warfarin used for?
Warfarin is used to treat anticoagulation (afib, DVT). Vitamin K antagonist anticoagulant used to prevent and treat thromboembolism (e.g., DVT/PE) and reduce stroke risk in atrial fibrillation; used for mechanical heart valves.
What drug class is Warfarin?
Warfarin is a Vitamin K antagonist anticoagulant (Cardiovascular group).
Is Warfarin a controlled substance?
No. Warfarin is not a federally controlled substance (it is unscheduled by the DEA).
Related drugs in the Cardiovascular group
Drill Warfarin the way the PTCE asks it
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Last reviewed June 25, 2026. Educational use only — not medical advice. Verify clinical specifics with your pharmacist or a current label source such as DailyMed. RxReflex is not affiliated with or endorsed by the Pharmacy Technician Certification Board (PTCB).