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Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-.

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Drugs and Lactation Database (LactMed) [Internet].

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Secobarbital

Last Revision: October 31, 2018.

Estimated reading time: 1 minute

CASRN: 76-73-3

Chemical structure

Drug Levels and Effects

Summary of Use during Lactation

Because there is little published experience with secobarbital during breastfeeding, other agents may be preferred, especially while nursing a newborn or preterm infant.

Drug Levels

Maternal Levels. Secobarbital was detected but not quantified 24 hours after an unspecified dose in a woman who was 4 days postpartum.[1]

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

Effects in Breastfed Infants

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

Effects on Lactation and Breastmilk

Secobarbital 200 mg given intravenously during labor 10 minutes to 3 hours before delivery for obstetric sedation reduced the sucking behavior of the newborn infants. The number of sucks, sucking pressure and total consumption of artificial feeding from the testing device were reduced Secobarbital 200 mg given intravenously during labor 10 minutes to 3 hours before delivery for obstetric sedation reduced the sucking behavior of the newborn infants. The number of sucks, sucking pressure and total consumption of artificial feeding from the testing device were reduced substantially.[2]

In one small study, women given promethazine with meperidine and secobarbital during labor, had the time to lactogenesis II prolonged by 14 hours. Women given meperidine or secobarbital without promethazine had lactogenesis II prolonged 7 hours compared to unmedicated women, but the difference was not statistically significant.[3]

Alternate Drugs to Consider

Zaleplon, Zolpidem

References

1.
Horning MG, Stillwell WG, Nowlin J et al. Identification and quantification of drugs and drug metabolites in human breast milk using GC-MS-COM methods. Mod Probl Paediatr. 1975;15:73-9.
2.
Kron RE, Stein M, Goddard KE. Newborn sucking behavior affected by obstetric sedation. Pediatrics. 1966;37:1012-6. [PubMed: 5949020]
3.
Hildebrandt HM. Maternal perception of lactogenesis time: a clinical report. J Hum Lact. 1999;15:317-23. [PubMed: 10776182]

Substance Identification

Substance Name

Secobarbital

CAS Registry Number

76-73-3

Drug Class

  • Breast Feeding
  • Barbiturates
  • Hypnotics and Sedatives
  • GABA Modulators

Disclaimer: Information presented in this database is not meant as a substitute for professional judgment. You should consult your healthcare provider for breastfeeding advice related to your particular situation. The U.S. government does not warrant or assume any liability or responsibility for the accuracy or completeness of the information on this Site .

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