Molecule

Drug Groups

approved

Description

Coumarin derivative that acts as a long acting oral anticoagulant. [PubChem]

Indication

Used for the prevention and treatment of thromboembolic disease including venous thrombosis, thromboembolism, and pulmonary embolism as well as for the prevention of ischemic stroke in patients with atrial fibrillation (AF).

Pharmacology

Phenprocoumon, a coumarin anticoagulant, thins the blood by antagonizing vitamin K which is required for the production of clotting factors in the liver. Anticoagulants such as phenprocoumon have no direct effect on an established thrombus, nor do they reverse ischemic tissue damage (damage caused by an inadequate blood supply to an organ or part of the body). However, once a thrombus has occurred, the goal of anticoagulant treatment is to prevent further extension of the formed clot and prevent secondary thromboembolic complications which may result in serious and possibly fatal sequelae.

Toxicity

50=500 mg/kg. Symptoms of overdose includes suspected or overt abnormal bleeding (e.g., appearance of blood in stools or urine, hematuria, excessive menstrual bleeding, melena, petechiae, excessive bruising or persistent oozing from superficial injuries).

Affected Organisms

Biotransformation

Phenprocoumon is stereoselectively metabolized by hepatic microsomal enzymes (cytochrome P-450) to inactive hydroxylated metabolites (predominant route) and by reductases to reduced metabolites. Cytochrome P450 2C9 is the principal form of human liver P-450 responsible for metabolism.

Absorption

Bioavailability is close to 100%

Half Life

5-6 days

Protein Binding

99%

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