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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
834127	Chlorhexidine gluconate 1.2 MG/ML Mouthwash	SCD	Clinical drug	50	82	View →
1734483	20 ML ropivacaine hydrochloride 5 MG/ML Injection	SCD	Clinical drug	50	79	View →
1868014	Pirfenidone 267 MG Oral Tablet	SCD	Clinical drug	50	72	View →
1868018	Pirfenidone 801 MG Oral Tablet	SCD	Clinical drug	50	70	View →
310604	Guaifenesin 20 MG/ML Oral Solution	SCD	Clinical drug	50	67	View →
1245001	Eltrombopag 12.5 MG Oral Tablet	SCD	Clinical drug	50	56	View →
825421	Eltrombopag 25 MG Oral Tablet	SCD	Clinical drug	50	56	View →
825427	Eltrombopag 50 MG Oral Tablet	SCD	Clinical drug	50	56	View →
884617	Eltrombopag 75 MG Oral Tablet	SCD	Clinical drug	50	56	View →
1046378	Acetaminophen 325 MG / phenylephrine hydrochloride 5 MG Oral Tablet	SCD	Clinical drug	50	55	View →
1052760	Magnesium citrate 58.2 MG/ML Oral Solution	SCD	Clinical drug	50	52	View →
856578	Propranolol hydrochloride 80 MG Oral Tablet	SCD	Clinical drug	49	147	View →
198189	Ramipril 5 MG Oral Capsule	SCD	Clinical drug	49	145	View →
198045	Nortriptyline 10 MG Oral Capsule	SCD	Clinical drug	49	137	View →
198146	Prednisone 2.5 MG Oral Tablet	SCD	Clinical drug	49	129	View →
857297	Clomipramine hydrochloride 25 MG Oral Capsule	SCD	Clinical drug	49	121	View →
857301	Clomipramine hydrochloride 50 MG Oral Capsule	SCD	Clinical drug	49	121	View →
197529	Clonazepam 2 MG Oral Tablet	SCD	Clinical drug	49	115	View →
198075	Perphenazine 16 MG Oral Tablet	SCD	Clinical drug	49	105	View →
313219	Terazosin 5 MG Oral Capsule	SCD	Clinical drug	49	104	View →
313160	Sumatriptan 100 MG Oral Tablet	SCD	Clinical drug	49	100	View →
1049254	Benzalkonium chloride 1.3 MG/ML Topical Solution	SCD	Clinical drug	49	99	View →
1099288	Desipramine hydrochloride 10 MG Oral Tablet	SCD	Clinical drug	49	80	View →
1119400	Everolimus 7.5 MG Oral Tablet	SCD	Clinical drug	49	80	View →
845507	Everolimus 10 MG Oral Tablet	SCD	Clinical drug	49	80	View →
845515	Everolimus 5 MG Oral Tablet	SCD	Clinical drug	49	80	View →
998189	Everolimus 2.5 MG Oral Tablet	SCD	Clinical drug	49	80	View →
381056	Isosorbide dinitrate 10 MG Oral Tablet	SCD	Clinical drug	49	76	View →
1091150	Methylphenidate hydrochloride 10 MG Oral Tablet	SCD	Clinical drug	49	73	View →
1299889	Ammonia 150 MG/ML Nasal Inhalant	SCD	Clinical drug	49	62	View →
311936	Neostigmine methylsulfate 1 MG/ML Injectable Solution	SCD	Clinical drug	49	55	View →
1091155	24 HR methylphenidate hydrochloride 18 MG Extended Release Oral Tablet	SCD	Clinical drug	49	54	View →
1091170	24 HR methylphenidate hydrochloride 27 MG Extended Release Oral Tablet	SCD	Clinical drug	49	54	View →
1091185	24 HR methylphenidate hydrochloride 36 MG Extended Release Oral Tablet	SCD	Clinical drug	49	54	View →
1091210	24 HR methylphenidate hydrochloride 54 MG Extended Release Oral Tablet	SCD	Clinical drug	49	54	View →
307746	Aluminum hydroxide 40 MG/ML / magnesium hydroxide 40 MG/ML / simethicone 4 MG/ML Oral Susp...	SCD	Clinical drug	49	51	View →
312173	Oxygen 99.5 % Gas for Inhalation	SCD	Clinical drug	48	456	View →
205324	Modafinil 200 MG Oral Tablet	SCD	Clinical drug	48	148	View →
197517	Clarithromycin 500 MG Oral Tablet	SCD	Clinical drug	48	141	View →
198188	Ramipril 2.5 MG Oral Capsule	SCD	Clinical drug	48	134	View →
317573	Pioglitazone 15 MG Oral Tablet	SCD	Clinical drug	48	129	View →
197732	Furosemide 80 MG Oral Tablet	SCD	Clinical drug	48	128	View →
863636	24 HR oxybutynin chloride 5 MG Extended Release Oral Tablet	SCD	Clinical drug	48	118	View →
197686	Etodolac 400 MG Oral Tablet	SCD	Clinical drug	48	113	View →
1116635	Ticagrelor 90 MG Oral Tablet	SCD	Clinical drug	48	93	View →
1366116	Bacitracin zinc 0.5 UNT/MG Topical Ointment	SCD	Clinical drug	48	82	View →
206842	Isosorbide dinitrate 20 MG Oral Tablet	SCD	Clinical drug	48	76	View →
1091497	Methylphenidate hydrochloride 5 MG Oral Tablet	SCD	Clinical drug	48	73	View →
477589	Polyethylene glycol 400 4 MG/ML / propylene glycol 3 MG/ML Ophthalmic Solution	SCD	Clinical drug	48	67	View →
1790650	Dextromethorphan hydrobromide 1 MG/ML / guaifenesin 10 MG/ML Oral Solution	SCD	Clinical drug	48	65	View →
2601743	0.5 ML tirzepatide 10 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2601755	0.5 ML tirzepatide 30 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2601761	0.5 ML tirzepatide 5 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2601767	0.5 ML tirzepatide 20 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2601773	0.5 ML tirzepatide 25 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2601784	0.5 ML tirzepatide 15 MG/ML Auto-Injector	SCD	Clinical drug	48	58	View →
2644396	0.5 ML tirzepatide 15 MG/ML Injection	SCD	Clinical drug	48	58	View →
2644401	0.5 ML tirzepatide 10 MG/ML Injection	SCD	Clinical drug	48	58	View →
2644405	0.5 ML tirzepatide 5 MG/ML Injection	SCD	Clinical drug	48	58	View →
2644409	0.5 ML tirzepatide 30 MG/ML Injection	SCD	Clinical drug	48	58	View →

Load more — page 18 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.