What happened
Original notice title
Public Health Alert Concerning Dietary Supplements Containing Cesium Salts
From the archived source record
Information on Select Dietary Supplement Ingredients and Other Substances Consumers using dietary supplements containing cesium salts, primarily cesium chloride. The FDA is warning consumers to avoid using dietary supplements containing cesium chloride or any other cesium salt (collectively referred to as “dietary supplements containing cesium salts”) due to significant safety risks, including heart toxicity and potential death. The FDA is also alerting health care professionals of the risks associated with dietary supplements containing cesium salts. The FDA is warning consumers and health care professionals to avoid using or recommending dietary supplements containing cesium salts. Multiple clinical case reports and non-clinical studies show significant safety concerns related to the use of such products, including potentially fatal cardiac arrhythmias, hypokalemia (low potassium), seizures, syncope (fainting, unresponsiveness), and death. While it appears that few dietary supplements containing cesium salts are currently on the market, consumers should be aware of the risks associated with them and should avoid purchasing and using such products. The FDA conducted a comprehensive review of the CFSAN Adverse Event Reporting System (CAERS) database related to cesium salts and reviewed other available information, including published studies and case reports, to evaluate the safety of dietary supplements containing cesium salts in response to a Citizen Petition filed by Public Citizen and Public Citizen’s Health Research Group. Our review identified multiple clinical case reports and non-clinical studies that suggest that cesium chloride and other cesium salts pose significant safety risks. In addition, in July 2018, the FDA warned health care professionals that cesium salts presented a significant safety risk in compounding drugs.
What the official notice says to do
Check the original notice for the instructions that apply to the named product, company, and affected lots.
Read the official notice →Status and source details
- Status recorded in the archive
- Published FDA communication
- Source checked
- Jul 16, 2026
- Record revision
- 85588c9052c6
This is a dated record. Its current status may have changed since the source was captured. A record applies to its stated scope; it is not a safety rating for every product from a company.
Sources, dates, and coverage →