What is the brand name for Warfarin?
The brand name for Warfarin is Coumadin.
PTCB 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).
Study guides that cover Warfarin
Free, in-depth guides to the patterns behind this drug — no app needed.
High-alert medications listthe meds where an error does the most harm
Drug suffix cheat sheetthe suffix that gives away this drug's class
How to memorize the Top 200 drugsa method for locking in brand↔generic pairs
What changed on the 2026 PTCB examthe new domain weights for 2026See all PTCE study guides or browse the full Top 200 drug list.
Drill Warfarin the way the PTCE asks it
RxReflex turns the Top 200 drugs into fast flashcard rounds, a guided Learn path, pharmacy math, and 40+ cheat sheets. Free to start.
Related drugs in the Cardiovascular group
Written and reviewed by the RxReflex Content Team. 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).