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Belzutifan 40 MG Oral Tablet [Welireg] — RxCUI 2567237

RxNorm drug concept · Semantic branded drug
RxCUI 2567237 Semantic branded drug · SBD ● Current RxNorm concept 1 FDA product 3 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

RxCUI2567237
Official nameBelzutifan 40 MG Oral Tablet [Welireg]
Concept typeSemantic branded drug (SBD)
RxNorm statusCurrent RxNorm concept
Also known asWelireg 40 MG Oral Tablet
FDA products mapped1
Package NDCs mapped3
Reported Medicaid activity (SDUD)1,047 prescriptions · 16 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 Belzutifan: what it is, how it’s used, side effects, and interactions.

📗 Our plain-language guide HelloPharmacist
  • Welireg (belzutifan) is a targeted cancer pill used for a few different conditions. It treats tumors related to VHL disease — a rare genetic condition that causes tumors to grow in...
  • What exactly is Welireg used for — I've never heard of it before.
  • The most common thing people notice is fatigue and anemia — low red blood cell counts — which can start within the first month. You might also get headaches, dizziness, nausea, or...
  • What side effects should I actually expect, and which ones should make me call my doctor?
📖 Read our full Belzutifan guide →

🕸️ Concept Web — How Belzutifan 40 MG Oral Tablet [Welireg] 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 Belzutifan 40 MG Oral Tablet [Welireg] RxCUI 2567237

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.

    • Belzutifan 2567226
  2. Brand names 1

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

    • Welireg 2567232
  3. Dose forms 9

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

    • Belzutifan Oral Tablet 2567230
    • Belzutifan Oral Product 2567228
    • Belzutifan Pill 2567229
    • Belzutifan Oral Tablet [Welireg] 2567236
    • Welireg Oral Product 2567234
    • Welireg Pill 2567235
    • 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

  • Belzutifan 40 MG Oral Tablet SCD · 2567231
  • Belzutifan 40 MG SCDC · 2567227
  • Belzutifan Oral Tablet SCDF · 2567230
  • Belzutifan Oral Product SCDG · 2567228
  • Belzutifan Pill SCDG · 2567229

Brand-Name Concepts

  • Belzutifan 40 MG [Welireg] SBDC · 2567233
  • Belzutifan Oral Tablet [Welireg] SBDF · 2567236
  • Welireg Oral Product SBDG · 2567234
  • Welireg Pill SBDG · 2567235
  • Welireg BN · 2567232

📦 FDA Products & Package NDCs

1 product · 3 package NDCs
3 package NDCs map to RxCUI 2567237 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
00006-5331-01 90 TABLET, FILM COATED in 1 BOTTLE (0006-5331-01) WELIREG Merck Sharp & Dohme LLC 2021-08-13
00006-5331-58 1 BOTTLE in 1 CARTON (0006-5331-58) / 90 TABLET, FILM COATE... WELIREG Merck Sharp & Dohme LLC 2023-06-21
00006-5331-59 1 BOTTLE in 1 CARTON (0006-5331-59) / 90 TABLET, FILM COATE... WELIREG Merck Sharp & Dohme LLC 2023-06-21
Observed labelers: Merck Sharp & Dohme LLC (3) — 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.