U.S. flag

An official website of the United States government

NCBI Bookshelf. A service of the National Library of Medicine, National Institutes of Health.

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

Cover of Drugs and Lactation Database (LactMed)

Drugs and Lactation Database (LactMed) [Internet].

Show details


Last Revision: October 31, 2018.

Estimated reading time: 1 minute

Drug Levels and Effects

Summary of Use during Lactation

X-rays used to obtain dental images, x-rays of broken bones, chest x-rays, etc. are a form of electromagnetic radiation similar to light, but with a shorter wavelength. X-rays are present only during the time that the image is being taken and leave no radiation or radioactivity in the body or in milk. Diagnostic X-rays have no known effect on the milk in the breast at the time of imaging, nor on milk production. No special precautions are required.[1]

For information on contrast media used with x-rays, see the LactMed entry for the specific contrast agent. For information on high-dose therapeutic radiation, see the LactMed record on Radiotherapy.

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.


Groen RS, Bae JY, Lim KJ. Fear of the unknown: ionizing radiation exposure during pregnancy. Am J Obstet Gynecol. 2012;206:456-62. [PubMed: 22244469]

Substance Identification

Substance Name


Drug Class

  • Breast Feeding
  • Diagnostic Imaging
  • Radiation

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.


Related information

Similar articles in PubMed

See reviews...See all...

Recent Activity

Your browsing activity is empty.

Activity recording is turned off.

Turn recording back on

See more...