TheraRadar
Data updated: May 26, 2026

KEVEYIS (dichlorphenamide)

Carbonic Anhydrase Inhibitors
Rare Disease Approved 1958-07-22

Keveyis is an oral medication used for patients living with primary hyperkalemic or hypokalemic periodic paralysis. It also helps those with related variants of these conditions. This drug is prescribed to help manage these specific forms of periodic paralysis.

Source: FDA Label • XERIS • Carbonic Anhydrase Inhibitor

How KEVEYIS Works

Keveyis works by inhibiting carbonic anhydrase. While it belongs to this specific class of inhibitors, the exact process by which it produces its therapeutic effects in patients with primary periodic paralysis remains unknown.

3
Indications
--
Phase 3 Trials
1
Priority Reviews
67
Years on Market

Details

Status
Prescription
First Approved
1958-07-22
Routes
ORAL
Dosage Forms
TABLET

Companies

Active Ingredient: DICHLORPHENAMIDE

KEVEYIS Approval History

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Original
New Indication
New Form
Label Update
17 FDA actions from 1958 to 2019 · 2 indication expansions
Nov 2019 SUPPL
Efficacy
Aug 2015 SUPPL Priority
Efficacy
Dec 2013 SUPPL
Mfg · Manufacturing (CMC)

What KEVEYIS Treats

2 indications

KEVEYIS is approved for 2 conditions since its original approval in 1958. These indications span multiple therapeutic areas including oncology, immunology, and more.

  • Hyperkalemic Periodic Paralysis
  • Hypokalemic Periodic Paralysis
Source: FDA Label

KEVEYIS Competitive Set

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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 KEVEYIS

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

DICHLORPHENAMIDE
DICHLORPHENAMIDE
2 shared
RISING
Shared indications:
Hyperkalemic Periodic ParalysisHypokalemic Periodic Paralysis
ORMALVI
DICHLORPHENAMIDE
2 shared
TORRENT
Shared indications:
Hyperkalemic Periodic ParalysisHypokalemic Periodic Paralysis
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Active Pipeline

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Key Completed Trials

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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.

KEVEYIS FDA Label Details

Indications & Usage

FDA Label (PDF)

KEVEYIS is indicated for the treatment of Hyperkalemic Periodic Paralysis; Hypokalemic Periodic Paralysis.

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Data Sources

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