Last update: June 9, 2018


Very High Risk for breastfeeding

Very unsafe. Contraindicated.
Use of an alternative or cessation of breastfeeding.

An anticoagulant derived from indandione. Vitamin K antagonist.
Administered orally.
Used less and less due to its serious side effects, which is why it has been withdrawn from sale in many countries (AAP 2001).

It is excreted in breastmilk in significant amounts (Goguel 1970).

There is a published a case of severe scrotal hematoma after surgical intervention (herniorrhaphy) in an infant whose mother was being treated with phenindione (Eckstein 1970).


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.

Other names

Phenindione is also known as

Phenindione in other languages or writings:


Phenindione belongs to this group or family:


Main tradenames from several countries containing Phenindione in its composition:


Variable Value Unit
Oral Bioavail. 100 %
Molecular weight 222 daltons
Protein Binding 88 %
Tmax 1,3 hours
T1/2 5 - 6 hours
Theoretical Dose 0,15 - 0,75 mg/Kg/d
Relative Dose 12 - 60 %


  1. AAP - American Academy of Pediatrics Committee on Drugs. Transfer of drugs and other chemicals into human milk. Pediatrics. 2001 Sep;108(3):776-89. Abstract Full text (link to original source) Full text (in our servers)
  2. Eckstein HB, Jack B. Breast-feeding and anticoagulant therapy. Lancet. 1970 Abstract
  3. Goguel M, Noël G, Gillet JY, Girardel JM, Muller P, Mayer G. Thérapeutique anticoagulante et allaitement: etude du passage de la phényl-2-dioxo, 1,3 indane dans le lait maternel. [Anticoagulant therapy and breast-feeding: study of the passage of phenyl-2-dioxo, 1,3 indane in the maternal milk]. Rev Fr Gynecol Obstet. 1970 Abstract

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