RimabotulinumtoxinB Levels and Effects while Breastfeeding
Summary of Use during Lactation
No data exist on the medical use of rimabotulinumtoxinB during breastfeeding. However, it is not detectable systemically after intramuscular use, thus excretion into breast milk is considered unlikely. Breastfeeding appears to protect infants against botulism.[1] One infant was safely breastfed during maternal botulism and no botulinum toxin was detectable in the mother's milk or infant. Since the doses used medically are far lower than those that cause botulism, amounts ingested by the infant, if any, are expected to be small and not cause any adverse effects in breastfed infants[2,3] No special precautions are required.
Drug Levels
Maternal Levels. Published information on the medical use of prabotulinumtoxinA during breastfeeding was not found as of the revision date.
Type A botulinum toxin was detected in the blood and stools of a nursing mother after ingesting fermented salmon eggs. She was given 2 vials of trivalent botulism antitoxin, 1 intravenously and 1 intramuscularly. A milk sample obtained 3 days after the onset of her illness and 4 hours after administration of botulinum antitoxin had no detectable botulinum toxin nor botulism organisms.[4]
Infant Levels. Type A botulinum toxin was detected in the blood and stools of a nursing mother after ingesting fermented salmon eggs. No botulinum toxin was detected in the breastfed infant's blood or stool on the day the mother was admitted to the hospital (3 days after the onset of illness) and no botulism organisms were detected in the infant's stools.[4]
Effects in Breastfed Infants
Published information on the medical use of prabotulinumtoxinA during breastfeeding was not found as of the revision date.
A woman developed botulism after ingesting fermented salmon eggs while breastfeeding her 8-month-old breastfed (extent not stated) infant. The infant developed no signs or symptoms of botulism even though she continued to nurse throughout the mother's hospitalization.[4]
Effects on Lactation and Breastmilk
Relevant published information was not found as of the revision date.
References
1.
Arnon SS, Damus K, Thompson B, et al. Protective role of human milk against sudden death from infant botulism. J Pediatr. 1982;100:568–73. [PubMed: 7038077]
2.
Butler DC, Heller MM, Murase JE. Safety of dermatologic medications in pregnancy and lactation: Part II. Lactation. J Am Acad Dermatol. 2014;70:417.e1–10. [PubMed: 24528912]
3.
Lee KC, Korgavkar K, Dufresne RG Jr, et al. Safety of cosmetic dermatologic procedures during pregnancy. Dermatol Surg. 2013;39:1573–86. [PubMed: 24164677]
4.
Middaugh J. Botulism and breast milk. N Engl J Med. 1978;298:343. [PubMed: 622098]
Substance Identification
Substance Name
rimabotulinumtoxinB
CAS Registry Number
93384-44-2
Drug Class
Breastfeeding
Lactation
Bacterial Toxins
Neuromuscular Agents
Neurotoxins
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