Last update: March 29, 2015

Losartan Potassium

Low Risk for breastfeeding


Moderately safe. Probably compatible.
Mild risk possible. Follow up recommended.
Read the Comment.

At latest update, relevant published data on excretion into breast milk were not found.

A high protein-binding capacity makes excretion into breast milk unlikely. In addition, a low oral bioavailability makes difficult the absorption towards the infant's plasma from ingested milk, except in prematures or newborns who may show an increased absorption.

Case report of kidney function impairment of a baby whose mother had taken Telmisartan in pregnancy.

Until more data on this medication is available, safer alternative drugs are preferred, especially in premature babies or during the neonatal period.

Should an ARA-II medication (Sartan type) be necessary, the associated risk may be decreased by choosing the one with a favorable pharmacokinetics (shorter half-life elimination time and lower bioavailability) like Eprosartan and Losartan

Alternatives

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.

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Other names

Losartan Potassium is also known as


Group

Losartan Potassium belongs to this group or family:

Tradenames

Main tradenames from several countries containing Losartan Potassium in its composition:

List of 17 tradenames

Pharmacokinetics

Variable Value Unit
Oral Bioavail. 33 %
Molecular weight 461 daltons
Protein Binding 99 %
VD 0,5 l/Kg
Tmax 1 - 3 hours
T1/2 2 - 9 hours

References

  1. Kearney L, Wright P, Fhadil S, Thomas M. Postpartum Cardiomyopathy and Considerations for Breastfeeding. Card Fail Rev. 2018 Abstract Full text (link to original source) Full text (in our servers)
  2. Rowe H, Baker T, Hale TW. Maternal medication, drug use, and breastfeeding. Pediatr Clin North Am. 2013 Feb;60(1):275-94. Abstract
  3. Merck. Losartan. Drug Summary 2013 Full text (in our servers)
  4. AEMPS. Losartan. Ficha técnica. 2011 Full text (in our servers)
  5. Tamargo j, Caballero R, Gómez R, Núñez L, Vaquero M y Delpón E. Características farmacológicas de los ARA-II. ¿Son todos iguales?. Rev Esp Cardiol Supl. 2006;6:10C-24C. 2006 Full text (in our servers)
  6. Pietrement C, Malot L, Santerne B, Roussel B, Motte J, Morville P. Neonatal acute renal failure secondary to maternal exposure to telmisartan, angiotensin II receptor antagonist. J Perinatol. 2003 Abstract Full text (link to original source) Full text (in our servers)

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