TheraRadar
Data updated: May 26, 2026

KIONEX (sodium polystyrene sulfonate)

Potassium Ion Exchange Activity
Renal Approved 1998-02-06

KIONEX is indicated for the treatment of Hyperkalemia.

Source: FDA Label • ANI PHARMS
2
Indications
--
Phase 3 Trials
28
Years on Market

Details

Status
Prescription
First Approved
1998-02-06
Routes
ORAL, RECTAL
Dosage Forms
SUSPENSION, POWDER

Companies

Active Ingredient: SODIUM POLYSTYRENE SULFONATE

KIONEX Approval History

1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
2015
2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
Original
New Indication
New Form
Label Update
8 FDA actions from 1998 to 2024
May 2024 SUPPL
Mfg · Manufacturing (CMC)
Oct 2022 SUPPL
Label · Labeling
Mar 2020 SUPPL
Label · Labeling

What KIONEX Treats

1 indications

KIONEX is approved for 1 conditions since its original approval in 1998. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Hyperkalemia
Source: FDA Label

KIONEX Competitive Set

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Three rings of competition based on shared molecular targets and treated indications.

Indication competitors

1

Same indication, different mechanism — what else might this patient receive?

Filters applied: drops same-active-ingredient (505(b)(2) reformulations), route-mismatch (topical vs systemic), and cross-therapeutic-area matches in same-indication rings.

Drugs Similar to KIONEX

3 of 4

FDA-approved drugs for similar conditions. Compare mechanisms and indications to understand treatment alternatives.

KALEXATE
SODIUM POLYSTYRENE SULFONATE
1 shared
KVK TECH
Shared indications:
Hyperkalemia
LOKELMA
SODIUM ZIRCONIUM CYCLOSILICATE
1 shared
AstraZeneca
Shared indications:
Hyperkalemia
SODIUM POLYSTYRENE SULFONATE
SODIUM POLYSTYRENE SULFONATE
1 shared
ROXANE
Shared indications:
Hyperkalemia
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Clinical Trial Registry

2 trials
Trial Sponsor ID Phase Status Title
NCT02065076 SKIP 13089 Ph 4 completed Efficacy of Sodium Polystyrene Sulfonate in the Treatment of Hyperkaliemia in Pre-dialysis Patients
NCT01866709 results posted SPS-001 Ph 4 terminated Safety and Efficacy of Sodium Polystyrene Sulfonate in Hyperkalemia
🔬

Active Pipeline

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Ongoing clinical trials by development phase

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Key Completed Trials

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Completed studies with published results, ranked by significance

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Trial Timeline

Full development history with FDA approval milestones

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Understanding FDA Approval Types
Count Type What it means
- ORIG Original approval - drug first enters market
- SUPPL - Efficacy New indication (new disease/condition approved)
- SUPPL - Labeling Label text changes (warnings, dosing updates)
- SUPPL - Manufacturing Production changes (new facility)
- SUPPL - Chemistry Formulation changes (new dosage strength)

Green lines in the timeline show ORIG and Efficacy approvals - the clinically meaningful milestones.

KIONEX FDA Label Details

Indications & Usage

KIONEX is indicated for the treatment of Hyperkalemia.

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Data Sources

Data sourced from official FDA and NIH databases. Click links to verify on original sources.