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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
857391	Acetaminophen 325 MG / hydrocodone bitartrate 2.5 MG Oral Tablet	SCD	Clinical drug	14	21	View →
1000135	Medroxyprogesterone acetate 2.5 MG Oral Tablet	SCD	Clinical drug	14	20	View →
1860239	100 ML potassium chloride 0.2 MEQ/ML Injection	SCD	Clinical drug	14	20	View →
1860241	50 ML potassium chloride 0.2 MEQ/ML Injection	SCD	Clinical drug	14	20	View →
1860463	100 ML potassium chloride 0.4 MEQ/ML Injection	SCD	Clinical drug	14	20	View →
1860466	50 ML potassium chloride 0.4 MEQ/ML Injection	SCD	Clinical drug	14	20	View →
198240	Tamoxifen 10 MG Oral Tablet	SCD	Clinical drug	14	20	View →
198750	Methylcellulose 500 MG Oral Tablet	SCD	Clinical drug	14	20	View →
1995461	24 HR methylphenidate hydrochloride 72 MG Extended Release Oral Tablet	SCD	Clinical drug	14	20	View →
2118449	400 ML vancomycin 5 MG/ML Injection	SCD	Clinical drug	14	20	View →
2387079	350 ML vancomycin 5 MG/ML Injection	SCD	Clinical drug	14	20	View →
248684	Salicylic acid 5 MG/ML Topical Cream	SCD	Clinical drug	14	20	View →
312507	100 ML potassium chloride 0.1 MEQ/ML Injection	SCD	Clinical drug	14	20	View →
883826	Tranexamic acid 650 MG Oral Tablet	SCD	Clinical drug	14	20	View →
903887	Fluvoxamine maleate 25 MG Oral Tablet	SCD	Clinical drug	14	20	View →
1442087	Allantoin 0.005 MG/MG Topical Gel	SCD	Clinical drug	14	19	View →
1658319	Brexpiprazole 0.25 MG Oral Tablet	SCD	Clinical drug	14	19	View →
1658327	Brexpiprazole 0.5 MG Oral Tablet	SCD	Clinical drug	14	19	View →
1658339	Brexpiprazole 3 MG Oral Tablet	SCD	Clinical drug	14	19	View →
1658343	Brexpiprazole 4 MG Oral Tablet	SCD	Clinical drug	14	19	View →
1870230	NDA020800 0.3 ML epinephrine 1 MG/ML Auto-Injector	SCD	Clinical drug	14	19	View →
242461	Cilostazol 100 MG Oral Tablet	SCD	Clinical drug	14	19	View →
1190110	Fluoxetine 60 MG Oral Tablet	SCD	Clinical drug	14	18	View →
1596780	60 ACTUAT testosterone 12.5 MG/ACTUAT Topical Gel	SCD	Clinical drug	14	18	View →
1724881	10 ML bupivacaine hydrochloride 5 MG/ML Injection [Sensorcaine]	SBD	Branded drug	14	18	View →
2273113	24 HR tofacitinib 22 MG Extended Release Oral Tablet	SCD	Clinical drug	14	18	View →
238175	10 ML methocarbamol 100 MG/ML Injection	SCD	Clinical drug	14	18	View →
2641654	0.2 ML adalimumab-adaz 100 MG/ML Prefilled Syringe [Hyrimoz]	SBD	Branded drug	14	18	View →
2641658	0.4 ML adalimumab-adaz 100 MG/ML Auto-Injector [Hyrimoz]	SBD	Branded drug	14	18	View →
2641661	0.4 ML adalimumab-adaz 100 MG/ML Prefilled Syringe [Hyrimoz]	SBD	Branded drug	14	18	View →
2641663	0.8 ML adalimumab-adaz 100 MG/ML Auto-Injector [Hyrimoz]	SBD	Branded drug	14	18	View →
2641664	{3 (0.8 ML adalimumab-adaz 100 MG/ML Auto-Injector) } Pack	GPCK	Generic pack	14	18	View →
2641665	{3 (0.8 ML adalimumab-adaz 100 MG/ML Auto-Injector [Hyrimoz]) } Pack [Hyrimoz Crohn's and...	BPCK	Branded pack	14	18	View →
2641670	{2 (0.4 ML adalimumab-adaz 100 MG/ML Auto-Injector) / 1 (0.8 ML adalimumab-adaz 100 MG/ML...	GPCK	Generic pack	14	18	View →
2641671	{2 (0.4 ML adalimumab-adaz 100 MG/ML Auto-Injector [Hyrimoz]) / 1 (0.8 ML adalimumab-adaz...	BPCK	Branded pack	14	18	View →
311385	Loxapine 25 MG Oral Capsule	SCD	Clinical drug	14	18	View →
317094	Entacapone 200 MG Oral Tablet	SCD	Clinical drug	14	18	View →
898715	Pregabalin 20 MG/ML Oral Solution	SCD	Clinical drug	14	18	View →
1791229	5 ML diltiazem hydrochloride 5 MG/ML Injection	SCD	Clinical drug	14	17	View →
239212	Lincomycin 300 MG/ML Injectable Solution	SCD	Clinical drug	14	17	View →
1246304	120 ACTUAT budesonide 0.16 MG/ACTUAT / formoterol fumarate 0.0045 MG/ACTUAT Metered Dose I...	SCD	Clinical drug	14	16	View →
1655956	40 ML methotrexate 25 MG/ML Injection	SCD	Clinical drug	14	16	View →
2396891	250 ML dexmedetomidine 0.004 MG/ML Injection	SCD	Clinical drug	14	16	View →
244638	Zinc oxide 0.4 MG/MG Topical Ointment	SCD	Clinical drug	14	16	View →
582299	6-aminocaproic acid 250 MG/ML Oral Solution	SCD	Clinical drug	14	16	View →
1049880	Diphenhydramine hydrochloride 0.02 MG/MG Topical Gel	SCD	Clinical drug	14	15	View →
1111641	1 ML glatiramer acetate 20 MG/ML Prefilled Syringe	SCD	Clinical drug	14	15	View →
1487361	1 ML glatiramer acetate 40 MG/ML Prefilled Syringe	SCD	Clinical drug	14	15	View →
1605171	0.4 ML darbepoetin alfa 0.025 MG/ML Prefilled Syringe	SCD	Clinical drug	14	15	View →
1605172	0.4 ML darbepoetin alfa 0.025 MG/ML Prefilled Syringe [Aranesp]	SBD	Branded drug	14	15	View →
1654954	1 ML darbepoetin alfa 0.2 MG/ML Injection	SCD	Clinical drug	14	15	View →
1654955	1 ML darbepoetin alfa 0.2 MG/ML Injection [Aranesp]	SBD	Branded drug	14	15	View →
1721458	Nafcillin 1000 MG Injection	SCD	Clinical drug	14	15	View →
1872384	15 ML sodium phosphate, dibasic 142 MG/ML / sodium phosphate, monobasic 276 MG/ML Injectio...	SCD	Clinical drug	14	15	View →
1872443	5 ML sodium phosphate, dibasic 142 MG/ML / sodium phosphate, monobasic 276 MG/ML Injection	SCD	Clinical drug	14	15	View →
317865	Calcium carbonate 400 MG Chewable Tablet	SCD	Clinical drug	14	15	View →
349273	1 ML darbepoetin alfa 0.025 MG/ML Injection	SCD	Clinical drug	14	15	View →
349274	1 ML darbepoetin alfa 0.04 MG/ML Injection	SCD	Clinical drug	14	15	View →
349275	1 ML darbepoetin alfa 0.06 MG/ML Injection	SCD	Clinical drug	14	15	View →
349276	1 ML darbepoetin alfa 0.1 MG/ML Injection	SCD	Clinical drug	14	15	View →

Load more — page 55 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.