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

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Drugs and Lactation Database (LactMed) [Internet].

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Rubidium Chloride Rb 82

Last Revision: August 17, 2020.

Estimated reading time: 1 minute

CASRN: 132486-03-4

image 135029475 in the ncbi pubchem database

Drug Levels and Effects

Summary of Use during Lactation

Information in this record refers to the use of rubidium chloride Rb 82 as a diagnostic agent. No information is available on the use of rubidium chloride Rb 82 during breastfeeding. The manufacturer recommends withholding breastfeeding for 1 hour after a diagnostic dose of rubidium chloride Rb 82.This length of time is greater than 10 half-lives of the radioisotope, so the nursing infant should not be exposed to radiation if this guideline is followed. The mother can nurse just before administration of the radiopharmaceutical. If the mother has expressed and saved milk prior to the examination, she can feed it to the infant during the period of nursing interruption.[1,2] Other authorities state that no discontinuation of breastfeeding is necessary.[3]

Drug Levels

Rb 82 decays by positron emission with a physical half-life of 1.27 minutes.[3]

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.


Burkhart M, Cockerham A, Cook J, et al. NUREG-1556, Volume 9, Revision 3. Consolidated guidance about materials licenses. Program-specific guidance about medical use licenses. US Nuclear Regulatory Commission Office of Nuclear Material Safety and Safeguards 2019. http://www​.nrc.gov/reading-rm​/doc-collections​/nuregs/staff/sr1556/v9/r2/
Mountford PJ, Coakley AJ. A review of the secretion of radioactivity in human breast milk: Data, quantitative analysis and recommendations. Nucl Med Commun. 1989;10:15–27. [PubMed: 2645546]
Dilsizian V, Metter D, Palestro C, et al. Advisory Committee on Medical Uses of Isotopes (ACMUI) Sub-Committee on Nursing Mother Guidelines for the Medical Administration of Radioactive Material. Final report submitted: January 31, 2019. https://www​.nrc.gov/docs​/ML1903/ML19038A498.pdf.

Substance Identification

Substance Name

Rubidium Chloride Rb 82

CAS Registry Number


Drug Class

Breast Feeding



Rubidium Radioisotopes

Diagnostic Agents

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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