Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/28/2025

Enoxaparin Dosing Guidelines for Anticoagulation

Introduction to Enoxaparin Dosing

  • The American College of Cardiology recommends a dose of 1 mg/kg subcutaneously every 12 hours for treatment of venous thromboembolism (VTE) and acute coronary syndrome, and 40 mg subcutaneously once daily for thromboprophylaxis 1, 2

Treatment Dosing

  • For treatment of deep vein thrombosis or pulmonary embolism, administer 1 mg/kg subcutaneously every 12 hours 1, 2
  • The American Heart Association recommends continuing treatment for the duration of hospitalization or until definitive intervention is performed 1, 3
  • For acute coronary syndrome, a standard dose of 1 mg/kg subcutaneously every 12 hours is recommended, with an optional 30 mg intravenous loading dose in selected patients 1, 3

Prophylactic Dosing

  • For general VTE prophylaxis, the American College of Obstetricians and Gynecologists recommends 40 mg subcutaneously once daily 5
  • Alternative prophylactic dosing includes 30 mg subcutaneously twice daily 5

Special Considerations

  • For patients with creatinine clearance <30 mL/min, reduce the dose to 1 mg/kg subcutaneously once daily 1, 3
  • For morbidly obese patients, consider weight-based prophylactic dosing of 0.5 mg/kg every 12 hours 5
  • The American College of Cardiology recommends against "stacking" enoxaparin with unfractionated heparin due to increased risk of bleeding 7, 1

Cancer-Associated VTE

  • The National Comprehensive Cancer Network recommends dalteparin as the preferred low-molecular-weight heparin for cancer-associated VTE, with a dose of 200 units/kg daily for 30 days, then 150 units/kg daily 4, 2
  • If using enoxaparin, a dose of 1 mg/kg subcutaneously every 12 hours is recommended, although long-term use at this dose has not been extensively tested in cancer patients 4, 2