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Drugs and Lactation Database (LactMed®) [Internet]. Bethesda (MD): National Institute of Child Health and Human Development; 2006-.
CASRN: 122-09-8
Drug Levels and Effects
Summary of Use during Lactation
No information is available on the use of phentermine during breastfeeding. Phentermine and its combination with topiramate are not recommended during breastfeeding.
Drug Levels
Maternal Levels. Relevant published information was not found as of the revision date.
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
Relevant published information was not found as of the revision date.
Alternate Drugs to Consider
Substance Identification
Substance Name
Phentermine
CAS Registry Number
122-09-8
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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- A study of the use of phenyl-tertiary-butylamine (Wilpo) to reduce weight.[Curr Ther Res Clin Exp. 1961]A study of the use of phenyl-tertiary-butylamine (Wilpo) to reduce weight.WELSH AL, EDE M, RUBENKOENIG HL. Curr Ther Res Clin Exp. 1961 Jun; 3:281-5.
- Comparison table: some FDA-approved drugs for weight management.[Med Lett Drugs Ther. 2018]Comparison table: some FDA-approved drugs for weight management.. Med Lett Drugs Ther. 2018 Jun 4; 60(1548):e98-e100. Epub 2018 Jun 4.
- Drugs and devices for weight management.[Med Lett Drugs Ther. 2022]Drugs and devices for weight management.. Med Lett Drugs Ther. 2022 May 30; 64(1651):81-88.
- Review Phentermine/Topiramate: Pediatric First Approval.[Paediatr Drugs. 2022]Review Phentermine/Topiramate: Pediatric First Approval.Dhillon S. Paediatr Drugs. 2022 Nov; 24(6):715-720.
- Review A review of the metabolic effects of controlled-release Phentermine/Topiramate.[Hormones (Athens). 2013]Review A review of the metabolic effects of controlled-release Phentermine/Topiramate.Kiortsis DN. Hormones (Athens). 2013 Oct-Dec; 12(4):507-16.
- Phentermine - Drugs and Lactation Database (LactMed®)Phentermine - Drugs and Lactation Database (LactMed®)
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