Home › NDC Lookup › RxCUI directory

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
2644413	0.5 ML tirzepatide 25 MG/ML Injection	SCD	Clinical drug	48	58	View →
2644417	0.5 ML tirzepatide 20 MG/ML Injection	SCD	Clinical drug	48	58	View →
2732437	Tirzepatide 12.5 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2732442	Tirzepatide 16.7 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2732446	Tirzepatide 20.8 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2732449	Tirzepatide 25 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2732452	Tirzepatide 4.17 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2732456	Tirzepatide 8.33 MG/ML Injectable Solution	SCD	Clinical drug	48	58	View →
2734623	2.4 ML tirzepatide 12.5 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
2734628	2.4 ML tirzepatide 16.7 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
2734632	2.4 ML tirzepatide 20.8 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
2734636	2.4 ML tirzepatide 25 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
2734640	2.4 ML tirzepatide 4.17 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
2734644	2.4 ML tirzepatide 8.33 MG/ML Pen Injector	SCD	Clinical drug	48	58	View →
313820	Acetaminophen 160 MG Chewable Tablet	SCD	Clinical drug	48	51	View →
1874559	24 HR desvenlafaxine succinate 50 MG Extended Release Oral Tablet	SCD	Clinical drug	47	143	View →
310346	Finasteride 5 MG Oral Tablet	SCD	Clinical drug	47	128	View →
863664	Oxybutynin chloride 5 MG Oral Tablet	SCD	Clinical drug	47	123	View →
857305	Clomipramine hydrochloride 75 MG Oral Capsule	SCD	Clinical drug	47	119	View →
197658	Estradiol 1 MG Oral Tablet	SCD	Clinical drug	47	111	View →
308979	Carbamazepine 200 MG Oral Tablet	SCD	Clinical drug	47	109	View →
477562	Fenofibrate 48 MG Oral Tablet	SCD	Clinical drug	47	101	View →
198006	Nadolol 20 MG Oral Tablet	SCD	Clinical drug	47	92	View →
198007	Nadolol 40 MG Oral Tablet	SCD	Clinical drug	47	91	View →
198365	Prochlorperazine 10 MG Oral Tablet	SCD	Clinical drug	47	86	View →
1099292	Desipramine hydrochloride 100 MG Oral Tablet	SCD	Clinical drug	47	78	View →
1099296	Desipramine hydrochloride 150 MG Oral Tablet	SCD	Clinical drug	47	78	View →
1099300	Desipramine hydrochloride 25 MG Oral Tablet	SCD	Clinical drug	47	78	View →
1099304	Desipramine hydrochloride 50 MG Oral Tablet	SCD	Clinical drug	47	78	View →
1099316	Desipramine hydrochloride 75 MG Oral Tablet	SCD	Clinical drug	47	78	View →
413261	Chloroxylenol 3 MG/ML Medicated Liquid Soap	SCD	Clinical drug	47	76	View →
1091392	Methylphenidate hydrochloride 20 MG Oral Tablet	SCD	Clinical drug	47	75	View →
1147685	Dextromethorphan hydrobromide 20 MG / guaifenesin 400 MG Oral Tablet	SCD	Clinical drug	47	71	View →
1373491	Dimethyl fumarate 240 MG Delayed Release Oral Capsule	SCD	Clinical drug	47	70	View →
844379	Witch hazel 500 MG/ML Medicated Pad	SCD	Clinical drug	47	70	View →
828299	Cyclobenzaprine hydrochloride 7.5 MG Oral Tablet	SCD	Clinical drug	46	195	View →
629697	24 HR minocycline 45 MG Extended Release Oral Tablet	SCD	Clinical drug	46	163	View →
310537	Glyburide 5 MG Oral Tablet	SCD	Clinical drug	46	137	View →
834235	Febuxostat 40 MG Oral Tablet	SCD	Clinical drug	46	122	View →
1807632	100 ML sodium chloride 9 MG/ML Injection	SCD	Clinical drug	46	116	View →
616456	Isopropyl alcohol 0.5 ML/ML Topical Solution	SCD	Clinical drug	46	112	View →
314234	Sucralfate 1000 MG Oral Tablet	SCD	Clinical drug	46	105	View →
728231	12 HR ranolazine 1000 MG Extended Release Oral Tablet	SCD	Clinical drug	46	101	View →
198008	Nadolol 80 MG Oral Tablet	SCD	Clinical drug	46	97	View →
616805	Ethanol 0.7 ML/ML Topical Foam	SCD	Clinical drug	46	87	View →
239191	Amoxicillin 50 MG/ML Oral Suspension	SCD	Clinical drug	46	82	View →
1101446	Doxylamine succinate 25 MG Oral Tablet	SCD	Clinical drug	46	76	View →
859871	Haloperidol decanoate 100 MG/ML Injectable Solution	SCD	Clinical drug	46	74	View →
351266	Buprenorphine 2 MG / naloxone 0.5 MG Sublingual Tablet	SCD	Clinical drug	46	66	View →
308763	Bismuth subsalicylate 35 MG/ML Oral Suspension	SCD	Clinical drug	46	65	View →
310891	Hydrocortisone 25 MG/ML Topical Cream	SCD	Clinical drug	46	62	View →
1372298	Mineral oil 0.14 MG/MG / petrolatum 0.749 MG/MG / phenylephrine hydrochloride 0.0025 MG/MG...	SCD	Clinical drug	46	58	View →
1085754	Triamcinolone acetonide 40 MG/ML Injectable Suspension	SCD	Clinical drug	46	56	View →
1111339	Olopatadine 1 MG/ML Ophthalmic Solution	SCD	Clinical drug	46	48	View →
1547561	Isotretinoin 25 MG Oral Capsule	SCD	Clinical drug	46	46	View →
1547565	Isotretinoin 35 MG Oral Capsule	SCD	Clinical drug	46	46	View →
1013662	24 HR minocycline 55 MG Extended Release Oral Tablet	SCD	Clinical drug	45	162	View →
629695	24 HR minocycline 135 MG Extended Release Oral Tablet	SCD	Clinical drug	45	162	View →
242438	Montelukast 5 MG Chewable Tablet	SCD	Clinical drug	45	127	View →
311759	Montelukast 4 MG Chewable Tablet	SCD	Clinical drug	45	124	View →

Load more — page 19 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.