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Tamsulosin Pregnancy and Breastfeeding Warnings

Tamsulosin is also known as: Flomax

Medically reviewed on December 18, 2017

Tamsulosin Pregnancy Warnings

This drug is not indicated for use in women.

AU TGA pregnancy category: B2
US FDA pregnancy category: B

Animal studies have revealed reduced fertility in males. The mechanism of decreased fertility is considered to be an effect of the compound on the vaginal plug formation, possibly due to changes of semen content or impairment of ejaculation. Ejaculation disorders have been reported in human clinical studies.

AU TGA pregnancy category B2: Drugs which have been taken by only a limited number of pregnant women and women of childbearing age, without an increase in the frequency of malformation or other direct or indirect harmful effects on the human fetus having been observed. Studies in animals are inadequate or may be lacking, but available data show no evidence of an increased occurrence of fetal damage.

US FDA pregnancy category B: Animal reproduction studies have failed to demonstrate a risk to the fetus and there are no adequate and well-controlled studies in pregnant women.

See references

Tamsulosin Breastfeeding Warnings

This drug is not indicated for use in women.

Excreted into human milk: Data not available
Excreted into animal milk: Data not available

Comments: The effects in the nursing infant are unknown.

See references

References for pregnancy information

  1. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  2. "Product Information. Flomax (tamsulosin)." Boehringer-Ingelheim, Ridgefield, CT.
  3. Cerner Multum, Inc. "Australian Product Information." O 0

References for breastfeeding information

  1. "Product Information. Flomax (tamsulosin)." Boehringer-Ingelheim, Ridgefield, CT.
  2. Cerner Multum, Inc. "UK Summary of Product Characteristics." O 0
  3. Cerner Multum, Inc. "Australian Product Information." O 0

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.

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