Is Tamsulosin safe while breastfeeding?
Here is what LactMed, the Drugs and Lactation Database published by the U.S. National Institute of Child Health and Human Development (NICHD), reports about Tamsulosin. The text below is quoted from that source — it is not our own verdict.
Summary of use during breastfeeding
Although tamsulosin is not FDA approved for use in women, it is used off-label in women with kidney stones. No information is available on the use of tamsulosin during breastfeeding. Because it is 94 to 99% bound to plasma proteins, amounts in milk are likely to be small. If tamsulosin is required by the mother, it is not a reason to discontinue breastfeeding. However, the breastfed infant should be carefully monitored.
Effects on the breastfed infant
Relevant published information was not found as of the revision date.
Effects on milk supply
Relevant published information was not found as of the revision date.
Levels in milk
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.
Tamsulosin in pregnancy
LactMed covers breastfeeding only. For what the NHS and the US prescribing label say about pregnancy, see:
“No published information” means the studies do not exist yet — not that Tamsulosin is known to be harmful, and not that it is known to be safe. Your prescriber or pharmacist can weigh your baby's age and whether a better-studied alternative would do the same job. Worth asking before stopping a medicine you need.
Source: Drugs and Lactation Database (LactMed), National Institute of Child Health and Human Development (NICHD), via NCBI Bookshelf, record “Tamsulosin” (tamsulosin). LactMed on NCBI Bookshelf. LactMed is a registered trademark of the U.S. Department of Health and Human Services.
Educational summary of an authoritative source — not medical advice. Never start, stop, or change a medicine while breastfeeding without confirming with your doctor.