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Methimazole 5 MG Oral Tablet — RxCUI 197942

RxNorm drug concept · Semantic clinical drug
RxCUI 197942 Semantic clinical drug · SCD ● Current RxNorm concept 40 FDA products 65 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

RxCUI197942
Official nameMethimazole 5 MG Oral Tablet
Concept typeSemantic clinical drug (SCD)
RxNorm statusCurrent RxNorm concept
Also known asthiamazole 5 MG Oral Tablet
FDA products mapped40
Package NDCs mapped65
Reported Medicaid activity (SDUD)378,542 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 Methimazole: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
  • Methimazole tells your thyroid gland to stop making so much thyroid hormone. When your thyroid is overactive — like in Graves' disease — it pumps out too much hormone and speeds ev...
  • What exactly is methimazole supposed to do for me?
  • Usually you'll take it in three separate doses spaced about 8 hours apart throughout the day — so think morning, afternoon, and evening. Your prescriber sets the exact dose based o...
  • How do I take it — do I take it all at once?
📖 Read our full Methimazole guide →

🕸️ Concept Web — How Methimazole 5 MG Oral Tablet 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 Methimazole 5 MG Oral Tablet RxCUI 197942

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.

    • Methimazole 6835
  2. Brand names 2

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

    • Felimazole 861969
    • Reguzol 2739293
  3. Dose forms 12

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

    • Methimazole Oral Tablet 372827
    • Methimazole Oral Product 1162223
    • Methimazole Pill 1162224
    • Methimazole Oral Tablet [Felimazole] 861971
    • Methimazole Oral Tablet [Reguzol] 2739297
    • Felimazole Oral Product 1176617
    • Felimazole Pill 1176618
    • Reguzol Oral Product 2739295
    • +4 more in this family
  4. Clinical & branded drugs 5

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

    • Methimazole 5 MG 316270
    • Methimazole 5 MG Oral Tablet [Felimazole] 861974
    • Methimazole 5 MG Oral Tablet [Reguzol] 2739300
    • Methimazole 5 MG [Felimazole] 861973
    • Methimazole 5 MG [Reguzol] 2739299

Showing up to 8 concepts per family — 16 of 20 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

  • Methimazole 5 MG SCDC · 316270
  • Methimazole Oral Tablet SCDF · 372827
  • Methimazole Oral Product SCDG · 1162223
  • Methimazole Pill SCDG · 1162224

Brand-Name Concepts

  • Methimazole 5 MG Oral Tablet [Felimazole] SBD · 861974
  • Methimazole 5 MG Oral Tablet [Reguzol] SBD · 2739300
  • Methimazole 5 MG [Felimazole] SBDC · 861973
  • Methimazole 5 MG [Reguzol] SBDC · 2739299
  • Methimazole Oral Tablet [Felimazole] SBDF · 861971
  • Methimazole Oral Tablet [Reguzol] SBDF · 2739297
  • Felimazole Oral Product SBDG · 1176617
  • Felimazole Pill SBDG · 1176618
  • Reguzol Oral Product SBDG · 2739295
  • Reguzol Pill SBDG · 2739296

📦 FDA Products & Package NDCs

40 products · 65 package NDCs
65 package NDCs map to RxCUI 197942 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
71335-3026-03 90 TABLET in 1 BOTTLE (71335-3026-3) Methimazole Bryant Ranch Prepack 2025-12-03
72162-1802-01 100 TABLET in 1 BOTTLE (72162-1802-1) Methimazole Bryant Ranch Prepack 2023-03-30
72162-1802-02 100 TABLET in 1 BOTTLE (72162-1802-2) Methimazole Bryant Ranch Prepack 2024-06-18
72162-1802-04 180 TABLET in 1 BOTTLE (72162-1802-4) Methimazole Bryant Ranch Prepack 2022-04-15
72162-1802-05 500 TABLET in 1 BOTTLE (72162-1802-5) Methimazole Bryant Ranch Prepack 2023-03-30
72162-1802-07 500 TABLET in 1 BOTTLE (72162-1802-7) Methimazole Bryant Ranch Prepack 2025-04-15
72162-1802-09 90 TABLET in 1 BOTTLE (72162-1802-9) Methimazole Bryant Ranch Prepack 2024-07-16
72578-0212-01 100 TABLET in 1 BOTTLE (72578-212-01) methimazole Viona Pharmaceuticals Inc. 2025-09-10
72578-0213-01 100 TABLET in 1 BOTTLE (72578-213-01) methimazole Viona Pharmaceuticals Inc. 2025-09-10
72603-0315-01 100 TABLET in 1 BOTTLE (72603-315-01) Methimazole NORTHSTAR RX LLC 2024-08-01
72603-0316-01 100 TABLET in 1 BOTTLE (72603-316-01) Methimazole NORTHSTAR RX LLC 2024-08-01
73190-0084-01 100 TABLET in 1 BOTTLE (73190-084-01) Methimazole AvKARE 2026-06-15
73190-0085-01 100 TABLET in 1 BOTTLE (73190-085-01) Methimazole AvKARE 2026-06-15
76483-0082-00 100 TABLET in 1 BOTTLE (76483-082-00) methimazole SQUARE PHARMACEUTICALS PLC. 2024-12-31
76483-0083-00 100 TABLET in 1 BOTTLE (76483-083-00) methimazole SQUARE PHARMACEUTICALS PLC. 2024-12-31
Observed labelers: Bryant Ranch Prepack (13) · Chartwell RX, LLC (9) · Macleods Pharmaceuticals Limited (6) · Strides Pharma Science Limited (5) · Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. (4) · Preferred Pharmaceuticals Inc. (4) · +13 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.