Adverse Drug Reaction Classification System

Pharmaceutical Information
Drug Name Warfarin
Drug ID BADD_D02373
Description Warfarin is an anticoagulant drug normally used to prevent blood clot formation as well as migration. Although originally marketed as a pesticide (d-Con, Rodex, among others), Warfarin has since become the most frequently prescribed oral anticoagulant in North America. Warfarin has several properties that should be noted when used medicinally, including its ability to cross the placental barrier during pregnancy which can result in fetal bleeding, spontaneous abortion, preterm birth, stillbirth, and neonatal death. Additional adverse effects such as necrosis, purple toe syndrome, osteoporosis, valve and artery calcification, and drug interactions have also been documented with warfarin use. Warfarin does not actually affect blood viscosity, rather, it inhibits vitamin-k dependent synthesis of biologically active forms of various clotting factors in addition to several regulatory factors.
Indications and Usage **Indicated** for:[label,L6616] 1) Prophylaxis and treatment of venous thromboembolism and related pulmonary embolism. 2) Prophylaxis and treatment of thromboembolism associated with atrial fibrillation. 3) Prophylaxis and treatment of thromboembolism associated with cardiac valve replacement. 4) Use as adjunct therapy to reduce mortality, recurrent myocardial infarction, and thromboembolic events post myocardial infarction. **Off-label** uses include: 1) Secondary prevention of stroke and transient ischemic attacks in patients with rheumatic mitral valve disease but without atrial fibrillation.[A179182]
Marketing Status approved
ATC Code B01AA03
DrugBank ID DB00682
KEGG ID D08682
MeSH ID D014859
PubChem ID 54678486
TTD Drug ID D0E3OF
NDC Product Code 76282-328; 43353-054; 65162-764; 70518-2381; 76282-335; 70518-2382; 76282-333; 43353-023; 51407-345; 65162-762; 65162-765; 70518-2383; 71335-1786; 65162-763; 65162-767; 68788-8402; 71610-491; 71610-519; 50090-2646; 50090-5058; 70518-2717; 71610-458; 71610-462; 43353-029; 50090-2936; 51407-346; 65162-769; 43353-030; 65162-768; 70518-2394; 71610-448; 71610-490; 76282-330; 50090-2613; 51407-342; 65162-766; 70518-2816; 76282-329; 76282-331; 76282-334; 50090-3263; 71335-1824; 76282-332; 43353-021; 43353-028; 43353-053; 51407-343; 51407-344; 51407-347; 65162-761; 76282-327; 43353-033; 50090-2645
UNII 5Q7ZVV76EI
Synonyms Warfarin | 4-Hydroxy-3-(3-oxo-1-phenylbutyl)-2H-1-benzopyran-2-one | Apo-Warfarin | Aldocumar | Gen-Warfarin | Warfant | Coumadin | Marevan | Warfarin Potassium | Potassium, Warfarin | Warfarin Sodium | Sodium, Warfarin | Coumadine | Tedicumar
Chemical Information
Molecular Formula C19H16O4
CAS Registry Number 81-81-2
SMILES CC(=O)CC(C1=CC=CC=C1)C2=C(C3=CC=CC=C3OC2=O)O
Chemical Structure
ADRs Induced by Drug
*The priority for ADR severity classification is based on FAERS assessment, followed by the most severe level in CTCAE rating. If neither is available, it will be displayed as 'Not available'.
**The 'Not Available' level is hidden by default and can be restored by clicking on the legend twice..
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Ischaemic hepatitis09.01.07.018; 24.04.07.0040.000028%Not Available
Jaundice01.06.04.004; 23.03.03.030; 09.01.01.004--Not Available
Joint effusion15.01.02.0050.000042%
Kidney fibrosis20.01.02.0110.000042%Not Available
Large intestinal ulcer07.04.06.0040.000070%
Large intestine perforation12.02.03.005; 07.04.06.0050.000056%
Left ventricular failure02.05.02.0010.000028%Not Available
Lethargy19.04.04.004; 17.02.04.003; 08.01.01.008--
Leukocytosis01.02.01.0020.000308%
Livedo reticularis24.03.04.003; 23.06.05.0010.000070%Not Available
Lung infiltration22.01.02.0040.000070%Not Available
Mallory-Weiss syndrome24.07.02.038; 07.12.01.0040.000146%Not Available
Mass08.03.05.0030.000126%Not Available
Melaena24.07.02.013; 07.12.02.0040.003085%Not Available
Menometrorrhagia21.01.03.0010.000028%Not Available
Mesenteric artery thrombosis24.01.08.003; 07.15.02.0080.000028%Not Available
Microcytic anaemia01.03.02.0080.000042%Not Available
Mitral valve incompetence02.07.01.0020.000154%Not Available
Monoparesis17.01.04.0110.000028%Not Available
Mouth haemorrhage24.07.02.014; 07.05.02.0010.000202%
Muscle atrophy17.05.03.004; 15.05.03.0030.000042%Not Available
Muscle haemorrhage12.01.07.016; 24.07.01.037; 15.05.03.0170.000869%Not Available
Muscle necrosis15.05.05.0070.000042%Not Available
Myelopathy17.10.01.0070.000042%Not Available
Myocardial infarction24.04.04.009; 02.02.02.007--
Myocardial ischaemia24.04.04.010; 02.02.02.008--Not Available
Nail discolouration23.02.05.001--
Nausea07.01.07.001--
Necrosis24.04.02.006; 08.03.03.0010.000238%Not Available
Necrosis ischaemic24.04.02.018--Not Available
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ADReCS-Target
Drug Name ADR Term Target
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