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RxCUI Directory

An RxCUI is the U.S. National Library of Medicine’s universal ID for one drug concept — an ingredient, a brand name, or a specific strength-and-form combination. Every concept page here connects that identifier to its FDA-listed products, package NDCs, NADAC pricing, and HCPCS billing codes, so other pages on this site can link a code straight to its meaning.

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

Compiled from the public NLM RxNorm vocabulary and the FDA openFDA NDC directory. Editorial policy

One page for every drug concept in current FDA listings. Most are clinical drugs (TTY SCD: ingredient + strength + dose form, like ibuprofen 200 MG oral tablet) and branded drugs (SBD: the same drug under its brand name), plus multi-drug packs. The clinical drug is the anchor level where products, package NDCs, pricing, and billing line up.

Key Stats

16,643

Drug concepts

83,174

FDA products mapped

368,539

Package NDCs

Jul 14, 2026

Source data

Our RxCUI Database: Every Drug Concept Behind Current FDA Listings

What an RxCUI is, what a TTY is, and how to read every code in this directory — a two-minute primer. New to RxCUIs? Start here

Two things run this whole directory: the RxCUI and its TTY. An RxCUI is just a number — one number for one exact drug concept in RxNorm (the U.S. National Library of Medicine’s standard drug vocabulary). But the numbers all look alike: 5640, 198440, 310965 — nothing in the digits tells you what any of them is.

That is the job of the TTY (term type).

The TTY is the label that says whether an RxCUI is a bare ingredient, a brand name, or an exact ingredient + strength + form. Same-looking numbers, completely different meanings — the TTY is the key. So the habit for every RxCUI is simple: read the number, then read the TTY.

Same Medicine, Several RxCUIs — the TTY Tells Them Apart

Ibuprofen isn’t one code. Each layer of it is its own RxCUI, and only the TTY says which layer you’re looking at:

5640TTY INibuprofen — the bare ingredient

310965TTY SCDibuprofen 200 MG oral tablet — one exact clinical drug

153010TTY BN“Advil” — the brand name is its own RxCUI, tagged BN

153008TTY SBDibuprofen 200 MG Oral Tablet [Advil] — the same clinical drug under its brand — is yet another, tagged SBD

The concept types (TTYs) you’ll see in this directory

Every browse row below shows its TTY — click any code to jump to its definition here.

The Active Ingredient

IN · PIN · MIN — the substance itself, before strength or form.

Ingredient

The active drug substance itself — no strength, form, or brand attached. Example: ibuprofen.

Precise ingredient

A specific form of an ingredient, such as a particular salt. Example: ibuprofen lysine.

MIN

Ingredient combination

Two or more active ingredients named together. Example: amlodipine / valsartan.

Generic (Clinical) Drugs

SCD and friends — ingredient + strength + dose form, unbranded.

SCD

Clinical drug

Ingredient + strength + dose form, unbranded. Example: ibuprofen 200 MG oral tablet.

SCDC

Clinical drug component

An ingredient at a specific strength, before a dose form is added.

SCDF

Clinical dose form

An ingredient in a dose form, without a specific strength.

SCDG

Clinical drug group

A grouping of related clinical drugs.

Brand-Name Drugs

BN · SBD and friends — trade names and branded drugs.

Brand name

A trade name for a drug. Example: Advil.

SBD

Branded drug

Brand + ingredient + strength + form. Example: ibuprofen 200 MG oral tablet [Advil].

SBDF

Branded dose form

A brand in a dose form, without a specific strength.

SBDG

Branded drug group

A grouping of related branded drugs.

Multi-Drug Packs

GPCK · BPCK — sets of drugs packaged and sold together.

GPCK

Generic pack

A set of generic drugs packaged together, such as a dose-taper pack.

BPCK

Branded pack

A branded multi-drug pack.

Dose-Form Vocabulary

DF · DFG — tablets, solutions, and their broader families.

Dose form

A form a medicine takes — tablet, solution, injection, and so on.

DFG

Dose-form group

A broader family of related dose forms.

🕸️ Reading a Concept Web

This is the interactive map you’ll find on every concept page — here shown for ibuprofen. One RxCUI never lives alone: follow the path from the raw ingredient down to the exact strength-and-form concepts FDA products carry. Hover or focus any chip for what it means.

The example concept Ibuprofen RxCUI 5640 Ingredient · IN

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

Brand names (BN) 1

BN, a brand name: the trade name alone — no strength, no form.
- Advil 153010 BN
Dose form (DF) 1

DF, a dose form: the bare form these come in — Oral Tablet is one concept shared by every oral-tablet drug, not unique to ibuprofen.
- Oral Tablet 317541 DF
Clinical drugs (SCD) 4

SCD, a clinical drug: ingredient + strength + dose form. The concept FDA product data attaches to most precisely.
- Ibuprofen 200 MG Oral Tablet 310965 SCD
- Ibuprofen 400 MG Oral Tablet 197805 SCD
- Ibuprofen 600 MG Oral Tablet 197806 SCD
- Ibuprofen 800 MG Oral Tablet 197807 SCD
Branded drugs (SBD) 4

SBD, a branded drug: that exact clinical drug under a brand name.
- Ibuprofen 200 MG Oral Tablet [Advil] 153008 SBD
- Ibuprofen 200 MG Oral Tablet [Genpril] 206886 SBD
- Ibuprofen 600 MG Oral Tablet [Ibu] 206913 SBD
- Ibuprofen 800 MG Oral Tablet [Ibu] 206917 SBD

A trimmed illustration for teaching. Every chip here is a real, verified RxNorm concept with its RxCUI printed. A real concept page draws the live web for its own RxCUI, one chip per stored related concept.

These are official RxNorm vocabulary relationships: how concepts name and organize the same drug. They do not establish therapeutic equivalence or substitutability. Two concepts appearing in one web is never a statement that products can be swapped.

Browse Concepts — 16,643 concepts in the current snapshot

TTY

Ordered by how many FDA products carry each concept. Clinical drugs (SCD: one exact ingredient + strength + dose form, such as ibuprofen 200 MG oral tablet) and branded drugs (SBD: the same drug under its brand name) lead the list, because those are the concepts FDA product listings name. The TTY column shows each row’s type — click any code to see what it means.

RxCUI	Official name	TTY	Concept type	Products	Packages
2732450	Tirzepatide 25 MG/ML Injectable Solution [Zepbound]	SBD	Branded drug	24	33	View →
2732454	Tirzepatide 4.17 MG/ML Injectable Solution [Zepbound]	SBD	Branded drug	24	33	View →
2732458	Tirzepatide 8.33 MG/ML Injectable Solution [Zepbound]	SBD	Branded drug	24	33	View →
2734626	2.4 ML tirzepatide 12.5 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
2734630	2.4 ML tirzepatide 16.7 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
2734634	2.4 ML tirzepatide 20.8 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
2734638	2.4 ML tirzepatide 25 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
2734642	2.4 ML tirzepatide 4.17 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
2734646	2.4 ML tirzepatide 8.33 MG/ML Pen Injector [Zepbound]	SBD	Branded drug	24	33	View →
349251	Tenofovir disoproxil fumarate 300 MG Oral Tablet	SCD	Clinical drug	24	33	View →
1659929	1 ML naloxone hydrochloride 0.4 MG/ML Injection	SCD	Clinical drug	24	32	View →
1867684	Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG Oral Capsule	SCD	Clinical drug	24	32	View →
309683	Dexamethasone 1 MG/ML / tobramycin 3 MG/ML Ophthalmic Suspension	SCD	Clinical drug	24	32	View →
239177	Fluorouracil 50 MG/ML Injectable Solution	SCD	Clinical drug	24	31	View →
1359360	Neomycin 3.5 MG/ML / polymyxin B 10000 UNT/ML / pramoxine hydrochloride 10 MG/ML Topical C...	SCD	Clinical drug	24	30	View →
1667915	5 ML isoproterenol hydrochloride 0.2 MG/ML Injection	SCD	Clinical drug	24	29	View →
1790097	5 ML doxorubicin hydrochloride 2 MG/ML Injection	SCD	Clinical drug	24	29	View →
1047362	Salicylic acid 10 MG/ML Topical Solution	SCD	Clinical drug	24	27	View →
1812079	1 ML dexamethasone phosphate 10 MG/ML Injection	SCD	Clinical drug	24	27	View →
1928569	15 ML dibasic potassium phosphate 236 MG/ML / monobasic potassium phosphate 224 MG/ML Inje...	SCD	Clinical drug	24	27	View →
483017	100 ML acetaminophen 10 MG/ML Injection	SCD	Clinical drug	24	26	View →
849501	Desmopressin acetate 0.004 MG/ML Injectable Solution	SCD	Clinical drug	24	26	View →
1375932	Acetaminophen 32.5 MG/ML / diphenhydramine hydrochloride 1.25 MG/ML / phenylephrine hydroc...	SCD	Clinical drug	24	25	View →
2173667	Acetaminophen 32.5 MG/ML / dextromethorphan hydrobromide 1 MG/ML / triprolidine hydrochlor...	SCD	Clinical drug	24	25	View →
2601746	0.5 ML tirzepatide 10 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2601758	0.5 ML tirzepatide 30 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2601764	0.5 ML tirzepatide 5 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2601770	0.5 ML tirzepatide 20 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2601776	0.5 ML tirzepatide 25 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2601785	0.5 ML tirzepatide 15 MG/ML Auto-Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2644399	0.5 ML tirzepatide 15 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2644403	0.5 ML tirzepatide 10 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2644407	0.5 ML tirzepatide 5 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2644411	0.5 ML tirzepatide 30 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2644415	0.5 ML tirzepatide 25 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2644419	0.5 ML tirzepatide 20 MG/ML Injection [Mounjaro]	SBD	Branded drug	24	25	View →
2733666	Tirzepatide 12.5 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2733668	Tirzepatide 16.7 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2733670	Tirzepatide 20.8 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2733671	Tirzepatide 25 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2733673	Tirzepatide 4.17 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2733675	Tirzepatide 8.33 MG/ML Injectable Solution [Mounjaro]	SBD	Branded drug	24	25	View →
2735286	2.4 ML tirzepatide 4.17 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2735288	2.4 ML tirzepatide 8.33 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2735290	2.4 ML tirzepatide 12.5 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2735292	2.4 ML tirzepatide 16.7 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2735294	2.4 ML tirzepatide 20.8 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
2735297	2.4 ML tirzepatide 25 MG/ML Pen Injector [Mounjaro]	SBD	Branded drug	24	25	View →
485968	Olanzapine 10 MG Injection	SCD	Clinical drug	24	25	View →
966571	1 ML hydralazine hydrochloride 20 MG/ML Injection	SCD	Clinical drug	24	25	View →
1115267	Levothyroxine sodium 0.1 MG Injection	SCD	Clinical drug	24	24	View →
1603501	72 HR fentanyl 0.0875 MG/HR Transdermal System	SCD	Clinical drug	24	24	View →
1730076	1 ML chlorpromazine hydrochloride 25 MG/ML Injection	SCD	Clinical drug	24	24	View →
1806181	30/70 Release 24 HR methylphenidate hydrochloride 10 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806187	30/70 Release 24 HR methylphenidate hydrochloride 20 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806189	30/70 Release 24 HR methylphenidate hydrochloride 30 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806191	30/70 Release 24 HR methylphenidate hydrochloride 40 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806193	30/70 Release 24 HR methylphenidate hydrochloride 50 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806195	50/50 Release 24 HR methylphenidate hydrochloride 10 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →
1806197	30/70 Release 24 HR methylphenidate hydrochloride 60 MG Extended Release Oral Capsule	SCD	Clinical drug	24	24	View →

Load more — page 37 of 278

Pages exist only for concepts observed on real FDA product listings.

Where does this data come from?

Concept identity, names, and relationships come from the NLM RxNorm vocabulary; product and package mappings from the FDA openFDA NDC Directory. Each directory generation is validated and published as one immutable snapshot. 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.