C₂₃H₁₄Na₂O₁₁

It is a chromogenic complex that acts by inhibiting the release of chemical mediators from sensitized mast cells. It is administered by inhalation for the prevention of asthma and atopic rhinitis, orally in food allergies and topically in dermatology and ophthalmology. 

At the date of last update we found no published data on its excretion in breast milk. 

The small dose and low plasma absorption of most inhaled (buccal or nasal), ophthalmologic or topical dermatologic preparations make the passage of significant amounts into breast milk unlikely. 

Their low oral bioavailability makes it difficult for them to pass into infant plasma from ingested breast milk, except in premature infants and the immediate neonatal period in which there may be greater intestinal permeability.

There is consensus among experts and scientific societies that sodium cromoglycate is compatible with breastfeeding^{(Hale, LactMed, Brigggs 2015, Nelson 2001, National Asthma Education 2004, Powrie 2006, Nice 2004)} due to its minimal absorption and low plasma levels in the mother. ^{(AEMPS 2013, Davis 2015)}

WHO 2002 essential drug list: compatible with breastfeeding. ^{(WHO 2002)}