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)
Coronary artery stenosis12.02.01.037; 24.04.04.017; 02.02.01.010--Not Available
Coronary artery thrombosis24.01.05.002; 02.02.01.0070.000056%Not Available
Crepitations08.01.03.0060.000028%Not Available
Cutaneous vasculitis24.12.04.008; 23.06.02.001; 10.02.02.0030.000098%Not Available
Cyanosis23.06.04.005; 02.11.04.004; 24.03.01.007; 22.02.02.007--
Cystitis haemorrhagic20.03.02.0030.000042%Not Available
Deafness neurosensory17.04.07.001; 04.02.01.0020.000098%Not Available
Death neonatal18.04.01.002; 08.04.01.0020.000056%
Decubitus ulcer23.03.11.0060.000118%Not Available
Depressed level of consciousness17.02.04.002--
Dermatitis bullous23.03.01.0020.000146%
Diabetes insipidus05.03.03.004; 14.05.07.0030.000042%Not Available
Diarrhoea07.02.01.001--
Diarrhoea haemorrhagic24.07.02.004; 07.02.01.0020.000070%Not Available
Diplegia17.01.04.0150.000028%Not Available
Disseminated intravascular coagulation24.01.01.010; 01.01.02.0020.000224%
Diverticulum07.10.01.0010.000390%Not Available
Diverticulum intestinal07.10.01.0020.000174%Not Available
Dizziness postural02.11.04.008; 17.02.05.004; 24.06.02.0080.000070%Not Available
Drug interaction08.06.03.0010.005940%Not Available
Dry skin23.03.03.001--
Duodenal ulcer07.04.02.0020.000452%
Duodenal ulcer haemorrhage24.07.02.020; 07.04.02.0040.000244%Not Available
Duodenitis07.08.03.0010.000179%Not Available
Dysarthria19.19.03.001; 17.02.08.0010.000308%
Dysgeusia07.14.03.001; 17.02.07.003--
Dysmetria17.02.02.0050.000042%Not Available
Dyspraxia17.02.03.0070.000028%Not Available
Ear haemorrhage12.01.14.004; 24.07.01.004; 04.03.01.0020.000409%Not Available
Ear pain04.03.01.003--
The 4th Page    First    Pre   4 5 6 7 8    Next   Last    Total 24 Pages
ADReCS-Target
Drug Name ADR Term Target
Tip:  Drug Name  ADR Term  Protein  Variation  Gene