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  • Title: Sodium zirconium cyclosilicate: a new potassium binder for the treatment of hyperkalemia.
    Author: Cases A, Gorriz JL.
    Journal: Drugs Today (Barc); 2018 Oct; 54(10):601-613. PubMed ID: 30398481.
    Abstract:
    Hyperkalemia is one of the most common electrolyte disturbances, especially among some groups of patients, such as in those with chronic kidney disease, diabetes or heart failure. Hyperkalemia has been associated with increased risks of mortality, arrhythmias, hospitalization and costs, as well as the need to down titrate/discontinue renin-angiotensin-aldosterone system inhibitors (RAASIs), despite their well-known cardiovascular and nephroprotective benefits. Current potassium binders have limitations (slow onset of action, limited selectivity for potassium binding, risk of drug interactions or gastrointestinal intolerance). Sodium zirconium cyclosilicate (SZC) is a new potassium binder recently approved for the treatment of chronic hyperkalemia. It is a nonabsorbable, inorganic crystal which selectively binds potassium and ammonium in exchange of Na+ and H+ in the whole gastrointestinal tract, achieving a rapid correction of serum potassium levels (within 2 days) and maintaining normokalemia in the long term (up to 1 year), with a good safety profile (common adverse reactions include gastrointestinal events and a dose-dependent risk of edema), excellent tolerability and a low potential for drug interactions. Its potassium-lowering efficacy is maintained irrespective of the use of RAASIs. In summary, SZC is a new potassium binder recently approved for the treatment of hyperkalemia. Its differences with respect to currently available potassium binders make SZC an attractive therapeutic option.
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