Strontium Chloride Sr 89 and Breastfeeding

Summary of use during lactation

Information in this record refers to the use of strontium 89 as a therapeutic agent. No information is available on the therapeutic use of strontium 89 during breastfeeding. It has been estimated that about 9% of the strontium in the maternal bloodstream reaches breastmilk for another strontium isotope, strontium 90.[1] Because strontium can substitute for calcium in infant bones, the manufacturer and expert opinion recommend discontinuing breastfeeding before a nursing mother receives strontium 89 chloride.[2]

Drug levels in milk and infant serum

Strontium 89 decays by beta emission with a physical half-life of 50.5 days.

Effects in breastfed infants

Relevant published information was not found as of the revision date.

Effects on lactation and breastmilk

Relevant published information was not found as of the revision date.

References

1. Harrison JD, Smith TJ, Phipps AW. Infant doses from the transfer of radionuclides in mothers' milk. Radiat Prot Dosimetry 2003;105:251-6.14526966 PubMed
2. Bodei L, Lam M, Chiesa C, et al. EANM procedure guideline for treatment of refractory metastatic bone pain. Eur J Nucl Med Mol Imaging 2008;35:1934-40.18649080 PubMed