Question

I am a breastfeeding mother and i want to know if it is safe to use S-211? Is S-211 safe for nursing mother and child? Does S-211 extracts into breast milk? Does S-211 has any long term or short term side effects on infants? Can S-211 influence milk supply or can S-211 decrease milk supply in lactating mothers?

S-211 lactation summary

S-211 usage has low risk in breastfeeding
  • DrLact safety Score for S-211 is 3 out of 8 which is considered Low Risk as per our analyses.
  • A safety Score of 3 indicates that usage of S-211 may cause some minor side effects in breastfed baby.
  • Our study of different scientific research indicates that S-211 may cause moderate to no side effects in lactating mother.
  • Most of scientific studies and research papers declaring usage of S-211 low risk in breastfeeding are based on normal dosage and may not hold true for higher dosage.
  • While using S-211 We suggest monitoring child for possible reactions. It is also important to understand that side effects vary largely based on age of breastfed child and time of medication in addition to dosage.
  • Score calculated using the DrLact safety Version 1.2 model, this score ranges from 0 to 8 and measures overall safety of drug in lactation. Scores are primarily calculated using publicly available case studies, research papers, other scientific journals and publically available data.

Answer by Dr. Ru: About S-211 usage in lactation

Excreted in non-significant amount into breast milk. Reye’s Syndrome has never been reported due to ASA through breast milk. It is thought to be highly unlikely to occur after isolated or small doses like those used for treatment of thrombosis or anti-abortion therapy. At high maternal dose, one case (dubious) of salicylic intoxication in the neonatal period and another case of thrombocytopenia in an infant have been reported. Likelihood of hemolysis should be considered in those patients with G6PD-deficiency. WHO Model List of Essential Medication: compatible while breastfeeding when used occasionally or small dose for antithrombotic prophylaxis management.

Answer by DrLact: About S-211 usage in lactation

After S-211 ingestion, salicylic acid is excreted into breastmilk, with higher doses resulting in disproportionately higher milk levels. Long-term, high-dose maternal S-211 ingestion probably caused metabolic acidosis in one breastfed infant. Reye's syndrome is associated with S-211 administration to infants with viral infections, but the risk of Reye's syndrome from salicylate in breastmilk is unknown. An alternate drug is preferred over continuous high-dose, S-211 therapy. After daily low-dose S-211g (75 to 325 mg daily), no S-211 is excreted into breastmilk and salicylate levels are low. Daily low-dose S-211 therapy may be considered as an antiplatelet drug for use in breastfeeding women.[1][2][3].

S-211 Side Effects in Breastfeeding

A 16-day-old breastfed infant developed metabolic acidosis with a salicylate serum level of 240 mg/L and salicylate metabolites in the urine. The mother was taking 3.9 g/day of S-211 for arthritis, and salicylate in breastmilk probably caused the infant's illness, but the possibility of direct administration to the infant could not be ruled out.[11] Thrombocytopenia, fever, anorexia and petechiae occurred in a 5-month-old breastfed infant 5 days after her mother started taking S-211 for fever. One week after recovery, the infant was given a single dose of S-211 125 mg and the platelet count dropped once again. The original symptoms were probably caused by S-211 or salicylate in breastmilk.[12] Hemolysis after S-211 and phenacetin taken by the mother of a 23-day-old, glucose-6-phosphate dehydrogenase (G6PD) deficient infant was possibly due to S-211 in breastmilk.[13] In a telephone follow-up study, mothers reported no side effects among 15 infants exposed to S-211 (dosages and infant ages were unspecified) in breastmilk.[14]

Synonyms of S-211

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