What is the FDA warning regarding OTC sodium phosphate products for constipation?

Updated: Jul 05, 2019
  • Author: Marc D Basson, MD, PhD, MBA, FACS; Chief Editor: BS Anand, MD  more...
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Answer

NOTE: In January 2014, the FDA issued a warning that exceeding one dose of OTC sodium phosphate products for constipation over a course of 24 hours may cause serious harm to the kidneys and heart and, in rare cases, may be fatal. [21, 22] Using more than the recommended dose of these products can cause severe dehydration and changes in serum electrolyte levels. Individuals who may be at higher risk for potential adverse events include young children; patients older than 55 years; patients who are dehydrated; patients with kidney disease, bowel obstruction, or inflammation of the bowel; and patients who are using medications that may affect kidney function. [21, 22]


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