The Basics
What is Oseltamivir?
Used in the treatment of the infection caused by the flu virus (influenza A and influenza B).
Brand names for Oseltamivir
Tamiflu
How Oseltamivir is classified
Anti-Infective Agents, Antiviral Agents, Neuraminidase Inhibitors
Oseltamivir During Pregnancy
Oseltamivir pregnancy category
Category CNote that the FDA has deprecated the use of pregnancy categories, so for some medications, this information isn’t available. We still think it’s useful to list historical info, however, given what a common proxy this has been in the past.
What we know about taking Oseltamivir while pregnant
N/A
Taking Oseltamivir While Breastfeeding
What are recommendations for lactation if you're taking Oseltamivir?
Limited data indicate that oseltamivir and its active metabolite are poorly excreted into breastmilk. Maternal dosages of 150 mg daily produce low levels in milk and would not be expected to cause any adverse effects in breastfed infants, especially if the infant is older than 2 months. Infants over 1 year of age can receive oseltamivir directly in doses much larger than those in breastmilk.
Maternal / infant drug levels
Limited data indicate that oseltamivir and its active metabolite are poorly excreted into breastmilk. Maternal dosages of 150 mg daily produce low levels in milk and would not be expected to cause any adverse effects in breastfed infants, especially if the infant is older than 2 months. Infants over 1 year of age can receive oseltamivir directly in doses much larger than those in breastmilk.
Possible effects of Oseltamivir on milk supply
Relevant published information was not found as of the revision date.
Possible alternatives to Oseltamivir
Oseltamivir.
List of References
Lactation sources: Drugs and Lactation Database (LactMed) [Internet]. Bethesda (MD): National Library of Medicine (US); 2006-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK501922/1. Wentges-van Holthe N, van Eijkeren M, van der Laan JW. Oseltamivir and breastfeeding. Int J Infect Dis. 2008;12:451. PMID: 18243025
2. Greer LG, Leff RD, Rogers VL et al. Pharmacokinetics of oseltamivir in breast milk and maternal plasma. Am J Obstet Gynecol. 2011;204:524.e1-4. PMID: 21457910
Disclaimer: This material is provided for educational purposes only and is not intended for medical advice, diagnosis, or treatment. Consult your healthcare provider with any questions.
