ATC Group: B01AA03 Warfarin

The World Health Organization's ATC classification organizes medical drugs based on therapeutic properties, chemical composition, and anatomy. It helps make essential medicines readily available globally and is widely used in the pharmaceutical industry.

Position of B01AA03 in the ATC hierarchy

Level Code Title
1 B Blood and blood forming organs
2 B01 Antithrombotic agents
3 B01A Antithrombotic agents
4 B01AA Vitamin K antagonists
5 B01AA03 Warfarin

Defined daily dose

The DDD is the assumed average maintenance dose per day for a drug used for its main indication in adults. The DDD is a unit of measurement and does not necessarily reflect the recommended or Prescribed Daily Dose. Therapeutic doses for individual patients and patient groups will often differ from the DDD as they will be based on individual characteristics (such as age, weight, ethnic differences, type and severity of disease) and pharmacokinetic considerations.

Route Amount
ORAL - Oral 7.5 mg
PAREN - Parenteral 7.5 mg

Active ingredients in B01AA03

Active Ingredient Description

Warfarin is a synthetic 4-Hydroxycoumarin derivative which acts by preventing the formation of active procoagulation factors II, VII, IX and X in the liver by inhibiting the vitamin K – mediated gammacarboxylation of precursor proteins. Full therapeutic activity is not achieved until circulating coagulation factors have been removed by normal catabolism. This occurs at different rates for each factor, with factor VII having the shortest half-life. Warfarin has no direct thrombolytic effect, though it may limit the extension of existing thrombi.

Related product monographs

Title Information Source Document Type  
COUMADIN Tablet FDA, National Drug Code (US) MPI, US: SPL/PLR
WARFANT Tablet Health Products Regulatory Authority (IE) MPI, EU: SmPC
WARFARIN Tablet Medicines & Healthcare Products Regulatory Agency (GB) MPI, EU: SmPC

Medicines in this ATC group

United States (US)

Australia (AU)

Brazil (BR)

Croatia (HR)

Cyprus (CY)

Ecuador (EC)

Estonia (EE)

Finland (FI)

France (FR)

Germany (DE)

Hong Kong (HK)

Ireland (IE)

Israel (IL)

Lithuania (LT)

Mexico (MX)

New Zealand (NZ)

Poland (PL)

Singapore (SG)

South Africa (ZA)

Spain (ES)

Turkey (TR)

United Kingdom (UK)

Note the following: The list of brand names is continuously updated, and thus does not include the total of products circulating worldwide.