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Zileuton 600 MG Oral Tablet [Zyflo] — RxCUI 211777

RxNorm drug concept · Semantic branded drug
RxCUI 211777 Semantic branded drug · SBD ● Current RxNorm concept 1 FDA product 1 package NDC 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

RxCUI211777
Official nameZileuton 600 MG Oral Tablet [Zyflo]
Concept typeSemantic branded drug (SBD)
RxNorm statusCurrent RxNorm concept
Also known asZyflo 600 MG Oral Tablet
FDA products mapped1
Package NDCs mapped1
RxNorm release07/06/2026
Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

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

📗 Our plain-language guide HelloPharmacist
  • No — zileuton is a controller medicine, not a rescue medicine. It works slowly over time to reduce airway inflammation and prevent attacks, but it won't open your airways quickly d...
  • Can I use zileuton to stop an asthma attack that's already happening?
  • Zileuton can raise liver enzyme levels, and in some people this can lead to real liver injury. Regular blood tests — especially a liver enzyme called ALT — let your doctor catch an...
  • Why do I need blood tests while taking zileuton?
📖 Read our full Zileuton guide →

🕸️ Concept Web — How Zileuton 600 MG Oral Tablet [Zyflo] 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 Zileuton 600 MG Oral Tablet [Zyflo] RxCUI 211777

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.

    • Zileuton 40575
  2. Brand names 1

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

    • Zyflo 221047
  3. Dose forms 9

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

    • Zileuton Oral Tablet 374334
    • Zileuton Oral Product 1156238
    • Zileuton Pill 1156239
    • Zileuton Oral Tablet [Zyflo] 367657
    • Zyflo Oral Product 1186493
    • Zyflo Pill 1186494
    • Oral Tablet 317541
    • 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

  • Zileuton 600 MG Oral Tablet SCD · 199904
  • Zileuton 600 MG SCDC · 316917
  • Zileuton Oral Tablet SCDF · 374334
  • Zileuton Oral Product SCDG · 1156238
  • Zileuton Pill SCDG · 1156239

Brand-Name Concepts

  • Zileuton 600 MG [Zyflo] SBDC · 572110
  • Zileuton Oral Tablet [Zyflo] SBDF · 367657
  • Zyflo Oral Product SBDG · 1186493
  • Zyflo Pill SBDG · 1186494
  • Zyflo BN · 221047

📦 FDA Products & Package NDCs

1 product · 1 package NDC
1 package NDC map to RxCUI 211777 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
10122-0901-12 120 TABLET in 1 BOTTLE (10122-901-12) ZYFLO Chiesi USA, Inc. 1996-12-06
Observed labelers: Chiesi USA, Inc. (1) — 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.