Last reviewed · How we verify

Standard Dose of Unfractionated Heparin

University of California, Los Angeles · FDA-approved active Small molecule

Unfractionated heparin inhibits blood coagulation by enhancing the activity of antithrombin III, which inactivates thrombin and other clotting factors.

Unfractionated heparin inhibits blood coagulation by enhancing the activity of antithrombin III, which inactivates thrombin and other clotting factors. Used for Acute venous thromboembolism (deep vein thrombosis and pulmonary embolism) treatment and prevention, Acute coronary syndrome and myocardial infarction, Atrial fibrillation for stroke prevention.

At a glance

Generic nameStandard Dose of Unfractionated Heparin
SponsorUniversity of California, Los Angeles
Drug classAnticoagulant
TargetAntithrombin III (enhancer); Thrombin (Factor IIa) and Factor Xa (indirect inhibition)
ModalitySmall molecule
Therapeutic areaCardiovascular
PhaseFDA-approved

Mechanism of action

Unfractionated heparin (UFH) is a naturally occurring glycosaminoglycan that binds to antithrombin III and dramatically increases its ability to inhibit thrombin (Factor IIa) and Factor Xa. This prevents the formation of fibrin clots and the extension of existing thrombi. UFH has a rapid onset of action and is reversible, making it suitable for acute anticoagulation in hospital settings.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape: