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 For the treatment of retinal vascular occlusion, pulmonary embolism, cardiomyopathy, atrial fibrillation and flutter, cerebral embolism, transient cerebral ischaemia, arterial embolism and thrombosis.
Marketing Status Discontinued; Prescription
ATC Code B01AA03
DrugBank ID DB00682
KEGG ID D08682
MeSH ID D014859
PubChem ID 54678486
TTD Drug ID D0E3OF
NDC Product Code 50090-2582; 71610-462; 76282-329; 50090-2613; 51407-341; 51407-342; 43353-028; 70934-821; 51407-347; 43353-023; 65162-763; 70934-820; 76282-328; 65162-769; 71610-448; 50090-3263; 71335-1786; 70518-2816; 65162-762; 76282-333; 71335-1824; 70934-911; 43353-053; 50090-2654; 76282-335; 65162-764; 43353-029; 65162-766; 70518-2382; 50090-2936; 51407-348; 65162-767; 43353-054; 65162-761; 50090-2646; 43353-030; 51407-343; 51407-346; 70518-2381; 43353-021; 50090-2586; 70518-2717; 76282-334; 50090-5058; 76282-331; 71610-490; 71610-491; 76282-332; 43353-033; 71610-519; 65162-765; 50090-2645; 70934-587; 76282-327; 70518-2383; 65162-768; 51407-349; 70518-2395; 71335-1595; 50090-2617; 51407-344; 51407-345; 71610-458; 70518-2380; 70518-2394; 76282-330
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
ADR Related Proteins Induced by Drug
ADR Term Protein Name UniProt AC TTD Target ID PMID
Coagulation time shortenedCytochrome P450 2C19P33261Not Available1109248; 806430; 1580446; 5006877; 806430; 5458032; 1109248; 15871634; 15487810; 15324521; 9200780; 624779; 12841813; 6690067; 3719899; 6499359
HaemorrhageCytochrome P450 2C9P11712T1924410073515; 11926893; 10961881
ADRs Induced by Drug
ADR Term ADReCS ID ADR Frequency (FAERS) ADR Severity Grade (FAERS) ADR Severity Grade (CTCAE)
Dieulafoy's vascular malformation24.03.03.025; 07.15.04.0020.000240%Not Available
Cerebral amyloid angiopathy24.03.05.010; 17.08.02.017; 10.02.05.0030.000063%Not Available
Foetal hypokinesia18.03.02.0150.000120%Not Available
Brain midline shift17.11.01.0110.001261%Not Available
Coma scale abnormal13.07.03.0120.000541%Not Available
Inflammatory marker increased13.09.02.0030.000180%Not Available
Intestinal haematoma24.07.02.048; 07.12.03.0070.001742%Not Available
Enterococcus test positive13.08.01.0080.000120%Not Available
Clostridium test positive13.08.01.0070.000120%Not Available
Helicobacter test positive13.08.01.0100.000360%Not Available
Superficial siderosis of central nervous system17.08.02.024; 14.13.03.007; 04.02.01.0160.000180%Not Available
Tumour rupture16.32.03.0330.000180%Not Available
Basal ganglia stroke24.04.06.029; 17.08.01.0410.000120%Not Available
Mesenteric haematoma24.07.02.049; 07.12.03.0080.000420%Not Available
Skin wound23.03.11.022; 12.01.06.0150.000031%Not Available
Ophthalmic vein thrombosis24.01.05.011; 06.07.02.0070.000120%Not Available
Gastrointestinal polyp haemorrhage24.07.02.046; 16.05.03.003; 07.20.01.0110.000300%Not Available
Traumatic haemothorax24.07.01.085; 22.05.02.008; 12.01.03.0100.000120%Not Available
Anticoagulation drug level abnormal13.17.01.0170.000031%Not Available
Spontaneous haemorrhage24.07.01.081; 01.01.03.0070.000300%Not Available
Oral mucosa haematoma24.07.02.053; 07.05.02.0030.000063%Not Available
Internal haemorrhage24.07.01.0720.000541%Not Available
Chest wall haematoma24.07.01.065; 15.03.01.0230.000541%Not Available
End stage renal disease20.01.03.019--Not Available
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