Last update: Nov. 25, 2014

Enoxaparin Sodium

Very Low Risk for breastfeeding

Safe. Compatible.
Minimal risk for breastfeeding and infant.

This is a Heparin with low molecular weight

There is published evidence of a lack of anti-coagulant activity in the serum of breastfed infants whose mothers were treated with Enoxaparin.

The high molecular weight of the so-called standard or non-fragmented Heparin and others called low weight Heparins makes that excretion into breast milk very unlikely.

There is scientific proof on the lack of excretion of Dalteparin into breast milk.

In addition, Heparin derived drugs are inactivated in the gut and they are not absorbed at all, hence, oral bioavailability is nil.

The risk of Heparin-induced Thrombocytopenia and Osteoporosis is lower with low weight Heparin among treated adults.


We do not have alternatives for Enoxaparin Sodium since it is relatively safe.

Suggestions made at e-lactancia are done by APILAM´s pediatricians and pharmacists, and are based on updated scientific publications.
It is not intended to replace the relationship you have with your doctor but to compound it.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.


Enoxaparin Sodium belongs to this group or family:


Main tradenames from several countries containing Enoxaparin Sodium in its composition:


Variable Value Unit
Oral Bioavail. 0 %
Molecular weight 4.500 (3.800 - 5.000) daltons
VD 0,1 l/Kg
Tmax 1 - 5 hours
T1/2 4 - 5 hours


  1. Noviani M, Wasserman S, Clowse ME. Breastfeeding in mothers with systemic lupus erythematosus. Lupus. 2016 Aug;25(9):973-9. Abstract
  2. Ozdemir D, Tam AA, Dirikoc A, Ersoy R, Cakir B. Postpartum osteoporosis and vertebral fractures in two patients treated with enoxaparin during pregnancy. Osteoporos Int. 2014 Abstract
  3. Fuller KP, Turner G, Polavarapu S, Prabulos AM. Guidelines for use of anticoagulation in pregnancy. Clin Lab Med. 2013 Abstract
  4. Yurdakök M. Fetal and neonatal effects of anticoagulants used in pregnancy: a review. Turk J Pediatr. 2012 Abstract Full text (link to original source) Full text (in our servers)
  5. Middeldorp S. How I treat pregnancy-related venous thromboembolism. Blood. 2011 Abstract Full text (link to original source) Full text (in our servers)
  6. Rath W. [Thromboprophylaxis during pregnancy and the puerperium: highlights from current guidelines]. Z Geburtshilfe Neonatol. 2010 Abstract
  7. Lindhoff-Last E, Bauersachs R. Heparin-induced thrombocytopenia-alternative anticoagulation in pregnancy and lactation. Semin Thromb Hemost. 2002 Abstract
  8. Wautrecht JC. [Which anticoagulants?]. Rev Med Brux. 2002 Abstract
  9. Richter C, Sitzmann J, Lang P, Weitzel H, Huch A, Huch R. Excretion of low molecular weight heparin in human milk. Br J Clin Pharmacol. 2001 Abstract Full text (link to original source) Full text (in our servers)
  10. Janssen NM, Genta MS. The effects of immunosuppressive and anti-inflammatory medications on fertility, pregnancy, and lactation. Arch Intern Med. 2000 Abstract Full text (link to original source) Full text (in our servers)
  11. Lindhoff-Last E, Willeke A, Thalhammer C, Nowak G, Bauersachs R. Hirudin treatment in a breastfeeding woman. Lancet. 2000 Abstract
  12. Bates SM, Ginsberg JS. Anticoagulants in pregnancy: fetal effects. Baillieres Clin Obstet Gynaecol. 1997 Abstract
  13. Guillonneau M, de Crepy A, Aufrant C, Hurtaud-Roux MF, Jacqz-Aigrain E. [Breast-feeding is possible in case of maternal treatment with enoxaparin]. Arch Pediatr. 1996 Abstract
  14. Kandrotas RJ. Heparin pharmacokinetics and pharmacodynamics. Clin Pharmacokinet. 1992 Abstract
  15. Wunderer G, Müller G. [Osteoporosis and pre- and postpartal heparin therapy]. Geburtshilfe Frauenheilkd. 1990 Abstract
  16. Ginsberg JS, Hirsh J. Optimum use of anticoagulants in pregnancy. Drugs. 1988 Abstract
  17. Harenberg J, Leber G, Zimmermann R, Schmidt W. [Prevention of thromboembolism with low-molecular weight heparin in pregnancy]. Geburtshilfe Frauenheilkd. 1987 Abstract
  18. Estes JW. Clinical pharmacokinetics of heparin. Clin Pharmacokinet. 1980 Abstract

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