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Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-.
CASRN: 9080-79-9
Drug Levels and Effects
Summary of Use during Lactation
Because sodium polystyrene sulfonate is not orally absorbed, it is unlikely to reach the breastmilk or adversely affect the breastfed infant after maternal administration. No special precautions are required.
A suspension of sodium polystyrene sulfonate has been added directly to breastmilk to lower the potassium concentration of milk for use in infants with renal impairment. In addition to lowering average potassium content by 65%, the calcium content of breastmilk was reduced by 84%.[1] Infants given either expressed breastmilk, formula or a combination of both had their average serum potassium levels decreased by 24% from 6.3 to 4.8 mEq/L. Serum calcium and creatinine also decreased slightly. The infants had no clinically noticeable side effects.[2] Addition of large amounts of sodium polystyrene sulfonate to artificial formula also lowers the calcium, copper, manganese, phosphorus, sulfur and zinc concentrations; whereas the iron, sodium and sulfur content of formulas are increased.[3] Similar changes might occur with breastmilk.
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.
Alternate Drugs to Consider
References
- 1.
- Bonnet L, Goudable J, Accominotti M, et al. Nephrologie. 1997;18:287–9. [Effect of polystyrene sulfonate resins on milk ionic concentration] [PubMed: 9496569]
- 2.
- Thompson K, Flynn J, Okamura D, et al. Pretreatment of formula or expressed breast milk with sodium polystyrene sulfonate (Kayexalate(R)) as a treatment for hyperkalemia in infants with acute or chronic renal insufficiency. J Ren Nutr. 2013;23:333–9. [PubMed: 23707305]
- 3.
- Taylor JM, Oladitan L, Carlson S, et al. Renal formulas pretreated with medications alters the nutrient profile. Pediatr Nephrol. 2015;30:1815–23. [PMC free article: PMC4572699] [PubMed: 25930981]
Substance Identification
Substance Name
Sodium Polystyrene Sulfonate
CAS Registry Number
9080-79-9
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