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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
197940	Methazolamide 50 MG Oral Tablet	SCD	Clinical drug	18	28	View →
1791861	50 ML milrinone lactate 1 MG/ML Injection	SCD	Clinical drug	18	27	View →
349491	Lamivudine 300 MG Oral Tablet	SCD	Clinical drug	18	27	View →
702519	Phenobarbital 4 MG/ML Oral Solution	SCD	Clinical drug	18	27	View →
753562	Omeprazole 20 MG / sodium bicarbonate 1680 MG Powder for Oral Suspension	SCD	Clinical drug	18	27	View →
991528	Dextromethorphan hydrobromide 3 MG/ML / promethazine hydrochloride 1.25 MG/ML Oral Solutio...	SCD	Clinical drug	18	27	View →
1039690	Menthol 50 MG/ML Topical Cream	SCD	Clinical drug	18	26	View →
1743779	1 ML methylprednisolone acetate 40 MG/ML Injection	SCD	Clinical drug	18	26	View →
2000134	Vancomycin 50 MG/ML Oral Solution	SCD	Clinical drug	18	26	View →
746606	Nilotinib 200 MG Oral Capsule	SCD	Clinical drug	18	26	View →
858613	Nicardipine hydrochloride 20 MG Oral Capsule	SCD	Clinical drug	18	26	View →
858616	Nicardipine hydrochloride 30 MG Oral Capsule	SCD	Clinical drug	18	26	View →
997653	Nilotinib 150 MG Oral Capsule	SCD	Clinical drug	18	26	View →
1190546	10 ML atropine sulfate 0.1 MG/ML Prefilled Syringe	SCD	Clinical drug	18	25	View →
309381	Coal tar 5 MG/ML Medicated Shampoo	SCD	Clinical drug	18	25	View →
197877	Lidocaine 25 MG/ML / prilocaine 25 MG/ML Topical Cream	SCD	Clinical drug	18	24	View →
198555	Capsaicin 0.25 MG/ML Topical Cream	SCD	Clinical drug	18	24	View →
2641653	0.2 ML adalimumab-adaz 100 MG/ML Prefilled Syringe	SCD	Clinical drug	18	23	View →
2641655	0.4 ML adalimumab-adaz 100 MG/ML Auto-Injector	SCD	Clinical drug	18	23	View →
2641660	0.4 ML adalimumab-adaz 100 MG/ML Prefilled Syringe	SCD	Clinical drug	18	23	View →
2641662	0.8 ML adalimumab-adaz 100 MG/ML Auto-Injector	SCD	Clinical drug	18	23	View →
1251617	Cetylpyridinium chloride 0.5 MG/ML Mouthwash	SCD	Clinical drug	18	22	View →
197685	Etodolac 300 MG Oral Capsule	SCD	Clinical drug	18	22	View →
833135	Milnacipran hydrochloride 100 MG Oral Tablet	SCD	Clinical drug	18	22	View →
833141	Milnacipran hydrochloride 12.5 MG Oral Tablet	SCD	Clinical drug	18	22	View →
833147	Milnacipran hydrochloride 25 MG Oral Tablet	SCD	Clinical drug	18	22	View →
889614	Chlordiazepoxide hydrochloride 5 MG / clidinium bromide 2.5 MG Oral Capsule	SCD	Clinical drug	18	22	View →
1012381	Bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injectable Solution [Marcain...	SBD	Branded drug	18	21	View →
1012388	Bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injectable Solution [Marcaine...	SBD	Branded drug	18	21	View →
1666613	20 ML baclofen 2 MG/ML Injection	SCD	Clinical drug	18	21	View →
1673242	10 ML bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injection [Marcaine with...	SBD	Branded drug	18	21	View →
1673243	30 ML bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injection [Marcaine with...	SBD	Branded drug	18	21	View →
1867612	10 ML bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injection [Marcaine wi...	SBD	Branded drug	18	21	View →
1867614	30 ML bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injection [Marcaine wi...	SBD	Branded drug	18	21	View →
1992545	6 ML arsenic trioxide 2 MG/ML Injection	SCD	Clinical drug	18	21	View →
835829	Testosterone cypionate 100 MG/ML Injectable Solution	SCD	Clinical drug	18	21	View →
314072	Latanoprost 0.05 MG/ML Ophthalmic Solution	SCD	Clinical drug	18	20	View →
748868	{21 (ethinyl estradiol 0.02 MG / levonorgestrel 0.1 MG Oral Tablet) / 7 (inert ingredients...	GPCK	Generic pack	18	20	View →
1307427	Sildenafil 10 MG/ML Oral Suspension	SCD	Clinical drug	18	19	View →
310132	Epinephrine 1 MG/ML Injectable Solution	SCD	Clinical drug	18	19	View →
106336	Ketoconazole 20 MG/ML Medicated Shampoo	SCD	Clinical drug	18	18	View →
1090496	Dextromethorphan hydrobromide 3 MG/ML Oral Solution	SCD	Clinical drug	18	18	View →
1115269	Levothyroxine sodium 0.2 MG Injection	SCD	Clinical drug	18	18	View →
1739803	24 HR amphetamine 12.5 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1739813	24 HR amphetamine 15.7 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1739819	24 HR amphetamine 18.8 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1739825	24 HR amphetamine 3.1 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1739831	24 HR amphetamine 6.3 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1739837	24 HR amphetamine 9.4 MG Extended Release Oral Tablet	SCD	Clinical drug	18	18	View →
1803930	Leucovorin 50 MG Injection	SCD	Clinical drug	18	18	View →
1861411	8 ML docetaxel 20 MG/ML Injection	SCD	Clinical drug	18	18	View →
198380	Tioconazole 0.065 MG/MG Vaginal Ointment	SCD	Clinical drug	18	18	View →
251201	Sertraline 200 MG Oral Capsule	SCD	Clinical drug	18	18	View →
2602751	Treprostinil 0.016 MG Inhalation Powder	SCD	Clinical drug	18	18	View →
2602754	Treprostinil 0.016 MG Inhalation Powder [Tyvaso]	SBD	Branded drug	18	18	View →
2602756	Treprostinil 0.032 MG Inhalation Powder	SCD	Clinical drug	18	18	View →
2602758	Treprostinil 0.032 MG Inhalation Powder [Tyvaso]	SBD	Branded drug	18	18	View →
2602760	Treprostinil 0.048 MG Inhalation Powder	SCD	Clinical drug	18	18	View →
2602762	Treprostinil 0.048 MG Inhalation Powder [Tyvaso]	SBD	Branded drug	18	18	View →
2602764	Treprostinil 0.064 MG Inhalation Powder	SCD	Clinical drug	18	18	View →

Load more — page 45 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.