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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
1721474	Ampicillin 500 MG Injection	SCD	Clinical drug	38	32	View →
197590	Diazepam 2 MG Oral Tablet	SCD	Clinical drug	37	127	View →
198047	Nortriptyline 75 MG Oral Capsule	SCD	Clinical drug	37	114	View →
863628	24 HR oxybutynin chloride 15 MG Extended Release Oral Tablet	SCD	Clinical drug	37	98	View →
1437288	24 HR topiramate 200 MG Extended Release Oral Capsule	SCD	Clinical drug	37	96	View →
999986	Amlodipine 10 MG / hydrochlorothiazide 12.5 MG / olmesartan medoxomil 40 MG Oral Tablet	SCD	Clinical drug	37	77	View →
885209	Benztropine mesylate 2 MG Oral Tablet	SCD	Clinical drug	37	75	View →
1085644	Triamcinolone acetonide 0.25 MG/ML Topical Cream	SCD	Clinical drug	37	71	View →
831102	Diltiazem hydrochloride 90 MG Oral Tablet	SCD	Clinical drug	37	71	View →
1482507	Eslicarbazepine acetate 200 MG Oral Tablet	SCD	Clinical drug	37	70	View →
1482515	Eslicarbazepine acetate 400 MG Oral Tablet	SCD	Clinical drug	37	70	View →
1482521	Eslicarbazepine acetate 600 MG Oral Tablet	SCD	Clinical drug	37	70	View →
1482525	Eslicarbazepine acetate 800 MG Oral Tablet	SCD	Clinical drug	37	70	View →
1010751	Epinephrine 0.01 MG/ML / lidocaine hydrochloride 10 MG/ML Injectable Solution	SCD	Clinical drug	37	68	View →
1049160	Pseudoephedrine hydrochloride 30 MG Oral Tablet	SCD	Clinical drug	37	66	View →
205285	Leflunomide 20 MG Oral Tablet	SCD	Clinical drug	37	65	View →
1489307	Ethanol 0.7 ML/ML Medicated Pad	SCD	Clinical drug	37	62	View →
197745	Guanfacine 1 MG Oral Tablet	SCD	Clinical drug	37	51	View →
485023	Mycophenolic acid 360 MG Delayed Release Oral Tablet	SCD	Clinical drug	37	51	View →
199308	Salicylic acid 5 MG/ML Topical Solution	SCD	Clinical drug	37	49	View →
310004	Dofetilide 0.25 MG Oral Capsule	SCD	Clinical drug	37	49	View →
1100924	Cetylpyridinium chloride 0.7 MG/ML Mouthwash	SCD	Clinical drug	37	46	View →
1245468	Docusate sodium 250 MG Oral Capsule	SCD	Clinical drug	37	46	View →
855642	Diclofenac sodium 0.03 MG/MG Topical Gel	SCD	Clinical drug	37	39	View →
153098	Deflazacort 6 MG Oral Tablet	SCD	Clinical drug	37	37	View →
153880	Deflazacort 30 MG Oral Tablet	SCD	Clinical drug	37	37	View →
1870954	Deflazacort 18 MG Oral Tablet	SCD	Clinical drug	37	37	View →
1870958	Deflazacort 36 MG Oral Tablet	SCD	Clinical drug	37	37	View →
2170239	5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection	SCD	Clinical drug	37	37	View →
2170241	5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolgensma...	SBD	Branded drug	37	37	View →
2170244	8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection	SCD	Clinical drug	37	37	View →
2170245	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 1 (...	GPCK	Generic pack	37	37	View →
2170246	8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolgensma...	SBD	Branded drug	37	37	View →
2170247	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170248	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 2 (...	GPCK	Generic pack	37	37	View →
2170249	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170250	{3 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170251	{3 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170252	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 2 (...	GPCK	Generic pack	37	37	View →
2170253	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170254	{2 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170255	{2 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170256	{9 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170257	{9 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170258	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 6 (...	GPCK	Generic pack	37	37	View →
2170259	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170260	{7 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170261	{7 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170262	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 6 (...	GPCK	Generic pack	37	37	View →
2170263	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170264	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 7 (...	GPCK	Generic pack	37	37	View →
2170265	{1 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170266	{8 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170267	{8 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170270	{5 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) } Pac...	GPCK	Generic pack	37	37	View →
2170272	{5 (8.3 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170273	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 7 (...	GPCK	Generic pack	37	37	View →
2170274	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →
2170275	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection) / 4 (...	GPCK	Generic pack	37	37	View →
2170276	{2 (5.5 ML onasemnogene abeparvovec-xioi 20000000000000 VECTOR-GENOMES/ML Injection [Zolge...	BPCK	Branded pack	37	37	View →

Load more — page 25 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.