Last update Jan. 31, 2018



Safe substance and/or breastfeeding is the best option.

A product which is used topically without there being any scientific proof of its effectiveness. It has hardly any bibliographical references in medical literature and a single published study indicates its very low effectiveness in hair regrowth (Orasan 2016).

Since the last update, we have not found published data on its excretion in breast milk.

The small dose used and very low plasma absorption of most topical dermatological preparations make it unlikely that a significant amount will transfer into breast milk.

It is normal to lose hair in the months following pregnancy and this has nothing to do with breastfeeding but with the end of the resting phase in hair loss that occurs during pregnancy. Within 12 months of giving birth, the hair grows back without causing alopecia.


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

Suggestions made at e-lactancia are done by APILAM team of health professionals, and are based on updated scientific publications. It is not intended to replace the relationship you have with your doctor but to compound it. The pharmaceutical industry contraindicates breastfeeding, mistakenly and without scientific reasons, in most of the drug data sheets.

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

Aminexil is also known as

Aminexil in other languages or writings:

  • 2,3-Dihydro-3-hydroxy-2-imino-4-pyrimidinamine (Chemical name)
  • C4H6N4O (Molecular formula)


Aminexil belongs to this group or family:


Variable Value Unit
Oral Bioavail. Bajo - Poor %
Molecular weight 126 daltons


  1. Orasan MS, Bolfa P, Coneac A, Muresan A, Mihu C. Topical Products for Human Hair Regeneration: A Comparative Study on an Animal Model. Ann Dermatol. 2016 Abstract

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e-lactancia is a resource recommended by El Parto Es Nuestro of Spain

Would you like to recommend the use of e-lactancia? Write to us at corporate mail of APILAM