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FDA Medwatch Alert: Kayexalate (sodium polystyrene sulfonate): Drug Safety Communication - FDA Requires Drug Interaction Studies

Posted 22 Oct 2015 by

ISSUE: FDA is requiring the Kayexalate manufacturer to conduct studies to investigate Kayexalate’s potential to bind to other medications administered by mouth – drug interactions that could affect how well the other medications work. The approved labeling for Kayexalate describes its potential to decrease absorption of lithium and thyroxine; however, extensive drug-drug interaction studies with Kayexalate have not been performed. During FDA’s review of another potassium-lowering drug, Veltassa (patiromer), we found that Veltassa bound to about half of the medications tested, some of which are commonly used in patients who require potassium-lowering drugs. Such binding could decrease the effects of these medications. The label for Veltassa contains a warning not to take other orally administered medications within 6 hours of taking Veltassa. Similar to Veltassa, Kayexalate may also bind ... Read more

Related support groups: Hyperkalemia, Kayexalate, Sodium Polystyrene Sulfonate

FDA Medwatch Alert: Sodium Polystyrene Sulfonate Suspension

Posted 16 Jul 2008 by

[Posted 07/16/2008] Roxane Laboratories, Inc. informed healthcare professionals of the recall of two lots of Sodium Polystyrene Sulfonate Suspension, USP, 15 g/60 mL Unit dose bottles (NDC 0054-0165-51; lot 856396A Exp April 2010, and lot 856693A Exp May 2010), a product used to treat hyperkalemia. A sample of one of the affected lots tested positive for a strain of yeast, which could potentially affect immunocompromised patients. Symptoms of a yeast infection range from thrush, skin rash, and blood infections. If patients develop an infection they should consult their physician. Pharmacists should determine if any of the referenced product has been dispensed and retrieve it. Additionally, pharmacists and wholesalers of the product should discontinue distribution and use of the referenced lots immediately and contact the manufacturer regarding returning the product. Read more

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