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Zonisamide 25 MG Oral Capsule — RxCUI 403966

RxNorm drug concept · Semantic clinical drug
RxCUI 403966 Semantic clinical drug · SCD ● Current RxNorm concept 31 FDA products 70 package NDCs Snapshot Jul 14, 2026

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Compiled from public NLM RxNorm and FDA (openFDA NDC directory) data sources. Editorial policy

What you’re looking at: the standardized identity of one medicine, as the U.S. drug-data system sees it. Below — every FDA-listed product, package code, price benchmark, and billing code that maps to it.

🗂️ Key Facts

RxCUI403966
Official nameZonisamide 25 MG Oral Capsule
Concept typeSemantic clinical drug (SCD)
RxNorm statusCurrent RxNorm concept
FDA products mapped31
Package NDCs mapped70
Reported Medicaid activity (SDUD)283,596 prescriptions · 52 state & territory Medicaid programs · latest period Q4 2025
RxNorm release07/06/2026
Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

Our pharmacist-built guide to Zonisamide: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
  • It's added to your other medicines to help control partial seizures. The capsules (Zonegran and generic zonisamide) are for adults with epilepsy. Zonisade liquid is for adults and...
  • Take it by mouth once or twice a day, with or without food. Swallow capsules whole. If you use Zonisade liquid, shake it well and measure with the device your pharmacist gives you,...
  • Sleepiness, dizziness, poor balance, loss of appetite, irritability, headache, nausea and trouble with memory or focus are the most common. Many are dose-related, so tell your pres...
  • Call for any new rash, fever with swollen glands, eye pain or sudden vision changes, or mood changes and thoughts of self-harm. Also call for fast breathing, unusual tiredness, or...
📖 Read our full Zonisamide guide →

🕸️ Concept Web — How Zonisamide 25 MG Oral Capsule Connects

One RxCUI never lives alone. Follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry — every stop is a real RxNorm concept with its own identifier. Hover or focus any chip for what it means.
This page's concept Zonisamide 25 MG Oral Capsule RxCUI 403966

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

  1. Ingredients 1

    The active substance itself — no strength, form, or brand attached yet.

    • Zonisamide 39998
  2. Brand names 1

    The same medicine's trade names. A brand name alone says nothing about strength or form.

    • Zonegran 261708
  3. Dose forms 9

    The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.

    • Zonisamide Oral Capsule 374625
    • Zonisamide Oral Product 1156263
    • Zonisamide Pill 1156264
    • Zonisamide Oral Capsule [Zonegran] 366554
    • Zonegran Oral Product 1186309
    • Zonegran Pill 1186310
    • Oral Capsule 316965
    • Oral Product 1151131
    • +1 more in this family
  4. Clinical & branded drugs 3

    Ingredient + strength + dose form. These are the concepts real FDA products actually carry.

Showing up to 8 concepts per family — 13 of 14 stored related concepts drawn.
These are official RxNorm vocabulary relationships — how concepts name and organize the same medicine. They do not establish therapeutic equivalence or substitutability: two concepts appearing in one web is never a statement that products can be swapped.

🔀 Generic ⇄ Brand Crosswalk

The same medicine has an unbranded (generic) identity and one or more brand-name identities — each with its own RxCUI. This is a naming relationship in RxNorm, not a statement that any two products are substitutable.

Generic (Clinical) Concepts

  • Zonisamide 25 MG SCDC · 406298
  • Zonisamide Oral Capsule SCDF · 374625
  • Zonisamide Oral Product SCDG · 1156263
  • Zonisamide Pill SCDG · 1156264

Brand-Name Concepts

  • Zonisamide 25 MG Oral Capsule [Zonegran] SBD · 404725
  • Zonisamide 25 MG [Zonegran] SBDC · 576610
  • Zonisamide Oral Capsule [Zonegran] SBDF · 366554
  • Zonegran Oral Product SBDG · 1186309
  • Zonegran Pill SBDG · 1186310
  • Zonegran BN · 261708

📦 FDA Products & Package NDCs

31 products · 70 package NDCs
70 package NDCs map to RxCUI 403966 in the current snapshot — up to 50 per page. Each linked NDC opens its full package page.
Package NDC Package Brand / generic name Labeler Marketing start
29300-0428-01 100 CAPSULE in 1 BOTTLE (29300-428-01) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
29300-0428-05 500 CAPSULE in 1 BOTTLE (29300-428-05) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
29300-0429-01 100 CAPSULE in 1 BOTTLE (29300-429-01) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
29300-0429-05 500 CAPSULE in 1 BOTTLE (29300-429-05) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
29300-0430-01 100 CAPSULE in 1 BOTTLE (29300-430-01) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
29300-0430-05 500 CAPSULE in 1 BOTTLE (29300-430-05) Zonisamide Unichem Pharmaceuticals (USA), Inc. 2021-07-09
59212-0680-10 100 CAPSULE in 1 BOTTLE (59212-680-10) Zonegran Advanz Pharma (US) Corp. 2000-03-27
59212-0681-10 100 CAPSULE in 1 BOTTLE (59212-681-10) Zonegran Advanz Pharma (US) Corp. 2000-03-27
59651-0378-01 100 CAPSULE in 1 BOTTLE (59651-378-01) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0378-03 30 CAPSULE in 1 BOTTLE (59651-378-03) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0378-05 500 CAPSULE in 1 BOTTLE (59651-378-05) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0378-60 60 CAPSULE in 1 BOTTLE (59651-378-60) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0379-01 100 CAPSULE in 1 BOTTLE (59651-379-01) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0379-03 30 CAPSULE in 1 BOTTLE (59651-379-03) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0379-05 500 CAPSULE in 1 BOTTLE (59651-379-05) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0379-60 60 CAPSULE in 1 BOTTLE (59651-379-60) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0380-01 100 CAPSULE in 1 BOTTLE (59651-380-01) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0380-03 30 CAPSULE in 1 BOTTLE (59651-380-03) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0380-05 500 CAPSULE in 1 BOTTLE (59651-380-05) Zonisamide Aurobindo Pharma Limited 2020-08-17
59651-0380-60 60 CAPSULE in 1 BOTTLE (59651-380-60) Zonisamide Aurobindo Pharma Limited 2020-08-17
62756-0258-01 30 CAPSULE in 1 BOTTLE (62756-258-01) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0258-03 100 CAPSULE in 1 BOTTLE (62756-258-03) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0258-04 1000 CAPSULE in 1 BOTTLE (62756-258-04) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0259-01 30 CAPSULE in 1 BOTTLE (62756-259-01) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0259-02 100 CAPSULE in 1 BOTTLE (62756-259-02) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0259-03 100 CAPSULE in 1 BOTTLE (62756-259-03) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0259-04 1000 CAPSULE in 1 BOTTLE (62756-259-04) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0260-01 30 CAPSULE in 1 BOTTLE (62756-260-01) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0260-03 100 CAPSULE in 1 BOTTLE (62756-260-03) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0260-04 1000 CAPSULE in 1 BOTTLE (62756-260-04) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
62756-0260-05 500 CAPSULE in 1 BOTTLE (62756-260-05) Zonisamide Sun Pharmaceutical Industries, Inc. 2006-03-17
68001-0242-00 100 CAPSULE in 1 BOTTLE (68001-242-00) Zonisamide BluePoint Laboratories 2014-03-13
68001-0243-00 100 CAPSULE in 1 BOTTLE (68001-243-00) Zonisamide BluePoint Laboratories 2014-03-13
68001-0244-00 100 CAPSULE in 1 BOTTLE (68001-244-00) Zonisamide BluePoint Laboratories 2014-03-13
68001-0244-03 500 CAPSULE in 1 BOTTLE (68001-244-03) Zonisamide BluePoint Laboratories 2014-03-13
68462-0128-01 100 CAPSULE in 1 BOTTLE (68462-128-01) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
68462-0128-05 500 CAPSULE in 1 BOTTLE (68462-128-05) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
68462-0129-01 100 CAPSULE in 1 BOTTLE (68462-129-01) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
68462-0129-05 500 CAPSULE in 1 BOTTLE (68462-129-05) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
68462-0130-01 100 CAPSULE in 1 BOTTLE (68462-130-01) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
68462-0130-05 500 CAPSULE in 1 BOTTLE (68462-130-05) Zonisamide Glenmark Pharmaceuticals Inc., USA 2006-01-30
70518-4600-00 100 POUCH in 1 BOX (70518-4600-0) / 1 CAPSULE in 1 POUCH (7... Zonisamide REMEDYREPACK INC. 2026-03-31
70518-4600-02 50 POUCH in 1 BOX (70518-4600-2) / 1 CAPSULE in 1 POUCH (70... Zonisamide REMEDYREPACK INC. 2026-05-27
70771-1142-01 100 CAPSULE in 1 BOTTLE (70771-1142-1) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1142-05 500 CAPSULE in 1 BOTTLE (70771-1142-5) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1143-01 100 CAPSULE in 1 BOTTLE (70771-1143-1) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1143-05 500 CAPSULE in 1 BOTTLE (70771-1143-5) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1144-00 1000 CAPSULE in 1 BOTTLE (70771-1144-0) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1144-01 100 CAPSULE in 1 BOTTLE (70771-1144-1) Zonisamide Zydus Lifesciences Limited 2017-11-22
70771-1144-05 500 CAPSULE in 1 BOTTLE (70771-1144-5) Zonisamide Zydus Lifesciences Limited 2017-11-22
Observed labelers: Aurobindo Pharma Limited (12) · Sun Pharmaceutical Industries, Inc. (11) · Bryant Ranch Prepack (8) · Viona Pharmaceuticals Inc (7) · Zydus Lifesciences Limited (7) · Glenmark Pharmaceuticals Inc., USA (6) · +6 more — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🗃️ Sources & Limits

Atlas generation902fddb9-e9c1-4004-bf4c-dba4d51037c7
openFDA export observedJul 14, 2026
RxNorm release07/06/2026
Methodology2026-07-full-catalog-v1
  • A shared RxCUI does not prove interchangeability. Products mapped to the same concept are not thereby equivalent or substitutable — equivalence is a separate, product-level determination.
  • Listing here does not establish approval or coverage. Appearing in this snapshot is a data observation, not an FDA approval status or a payer coverage decision.
  • Missing data never means zero. A silent dataset (no price, no billing code, no utilization) means no observation — not that the real-world value is zero.
  • Counts describe the mapping footprint. Product, package, and labeler counts are the FDA-listed mapping footprint in this snapshot — not sales, inventory, availability, or market share.
This product uses publicly available data from the U.S. National Library of Medicine (NLM), National Institutes of Health, Department of Health and Human Services; NLM is not responsible for the product and does not endorse or recommend this or any other product.

Machine-readable JSON

Reference information about drug-concept identifiers and public regulatory data — not medical advice. Talk to your pharmacist or prescriber about your own medication.