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Azathioprine 100 MG Oral Tablet [Azasan] — RxCUI 404476

Name: Azathioprine 100 MG Oral Tablet [Azasan] (RxCUI 404476)
Creator: Brian Staiger, PharmD

RxNorm drug concept · Semantic branded drug

RxCUI 404476 Semantic branded drug · SBD ● Current RxNorm concept 2 FDA products 2 package NDCs Snapshot Jul 14, 2026

This page is curated, coded, and maintained by Dr. Brian Staiger, PharmD

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

RxCUI404476

Official nameAzathioprine 100 MG Oral Tablet [Azasan]

Concept typeSemantic branded drug (SBD)

RxNorm statusCurrent RxNorm concept

Also known asAzasan 100 MG Oral Tablet

FDA products mapped2

Package NDCs mapped2

RxNorm release07/06/2026

Snapshot dataJul 14, 2026

📖 Skip the Codes — Read It in Plain English.

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

📗 Our plain-language guide HelloPharmacist

You're right that it treats two quite different conditions, but the common thread is the immune system. After a kidney transplant, your immune system sees the new kidney as foreign...
What exactly is azathioprine being used for — it seems like a drug used for very different things?
Azathioprine is not a quick fix — it typically takes 6 to 8 weeks before you start feeling any improvement, and your doctor will usually give it a full 12 weeks before deciding if...
How long will it take before I notice it working for my rheumatoid arthritis?

📖 Read our full Azathioprine guide →

🕸️ Concept Web — How Azathioprine 100 MG Oral Tablet [Azasan] 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 Azathioprine 100 MG Oral Tablet [Azasan] RxCUI 404476 Semantic branded drug · SBD

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

Ingredients 1

The active substance itself — no strength, form, or brand attached yet.
- Azathioprine 1256 IN
Brand names 1

The same medicine's trade names. A brand name alone says nothing about strength or form.
- Azasan 404872 BN
Dose forms 9

The ingredient poured into a form — tablet, solution, cream — still without one fixed strength.
- Azathioprine Oral Tablet 370973 SCDF
- Azathioprine Oral Product 1155001 SCDG
- Azathioprine Pill 1155002 SCDG
- Azathioprine Oral Tablet [Azasan] 405819 SBDF
- Azasan Oral Product 1176318 SBDG
- Azasan Pill 1176319 SBDG
- Oral Tablet 317541 DF
- Oral Product 1151131 DFG
- +1 more in this family
Clinical & branded drugs 3

Ingredient + strength + dose form. These are the concepts real FDA products actually carry.
- Azathioprine 100 MG Oral Tablet 359228 SCD
- Azathioprine 100 MG 360266 SCDC
- Azathioprine 100 MG [Azasan] 576427 SBDC

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

Azathioprine 100 MG Oral Tablet SCD · 359228
Azathioprine 100 MG SCDC · 360266
Azathioprine Oral Tablet SCDF · 370973
Azathioprine Oral Product SCDG · 1155001
Azathioprine Pill SCDG · 1155002

Brand-Name Concepts

Azathioprine 100 MG [Azasan] SBDC · 576427
Azathioprine Oral Tablet [Azasan] SBDF · 405819
Azasan Oral Product SBDG · 1176318
Azasan Pill SBDG · 1176319
Azasan BN · 404872

📦 FDA Products & Package NDCs

2 products · 2 package NDCs

2 package NDCs map to RxCUI 404476 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
65649-0231-41	100 TABLET in 1 BOTTLE (65649-231-41)	Azasan	Salix Pharmaceuticals	2003-04-01
65649-0241-41	100 TABLET in 1 BOTTLE (65649-241-41)	Azasan	Salix Pharmaceuticals	2003-04-01

Observed labelers: Salix Pharmaceuticals (2) — this is the FDA-listed mapping footprint, not sales, inventory, availability, or market share.

🧾 Billing Codes (HCPCS)

Medical billing codes (HCPCS "J-codes") that connect to this concept's packages — used mostly when a clinic or hospital bills for a drug it administers. Each code links to its full billing page.

Code	Descriptor	Mapped packages	Sources
J7500	Azathioprine oral 50mg	2	CMS

⚠ A crosswalk is not coverage: an NDC↔HCPCS mapping does not guarantee any payer covers or pays the code. Always verify the current payer policy before billing.

🗃️ 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.