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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

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.
IN
Ingredient

The active drug substance itself — no strength, form, or brand attached. Example: ibuprofen.

PIN
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.
BN
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.
DF
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

Every web starts here: one RxCUI, one fixed meaning in the RxNorm vocabulary.

  1. Brand names (BN) 1

    BN, a brand name: the trade name alone — no strength, no form.

    • Advil 153010
  2. 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
  3. 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
    • Ibuprofen 400 MG Oral Tablet 197805
    • Ibuprofen 600 MG Oral Tablet 197806
    • Ibuprofen 800 MG Oral Tablet 197807
  4. Branded drugs (SBD) 4

    SBD, a branded drug: that exact clinical drug under a brand name.

    • Ibuprofen 200 MG Oral Tablet [Advil] 153008
    • Ibuprofen 200 MG Oral Tablet [Genpril] 206886
    • Ibuprofen 600 MG Oral Tablet [Ibu] 206913
    • Ibuprofen 800 MG Oral Tablet [Ibu] 206917

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
905189 20 ML ropivacaine hydrochloride 7.5 MG/ML Injection SCD Clinical drug 29 52 View →
311668 Metoclopramide 5 MG Oral Tablet SCD Clinical drug 29 51 View →
1373497 {14 (dimethyl fumarate 120 MG Delayed Release Oral Capsule) / 46 (dimethyl fumarate 240 MG... GPCK Generic pack 29 49 View →
670026 Darunavir 600 MG Oral Tablet SCD Clinical drug 29 39 View →
311994 Nitrofurantoin, macrocrystals 25 MG Oral Capsule SCD Clinical drug 29 38 View →
1482908 Posaconazole 100 MG Delayed Release Oral Tablet SCD Clinical drug 29 36 View →
1659592 Ampicillin 1000 MG / sulbactam 500 MG Injection SCD Clinical drug 29 31 View →
314099 Methylprednisolone 62.5 MG/ML Injectable Solution SCD Clinical drug 29 31 View →
1308569 24 HR rivastigmine 0.554 MG/HR Transdermal System SCD Clinical drug 29 29 View →
1740900 Mitomycin 20 MG Injection SCD Clinical drug 29 29 View →
237788 Leucovorin 350 MG Injection SCD Clinical drug 29 29 View →
239209 Vancomycin 100 MG/ML Injectable Solution SCD Clinical drug 29 29 View →
403818 Moxifloxacin 5 MG/ML Ophthalmic Solution SCD Clinical drug 29 29 View →
725023 24 HR rivastigmine 0.396 MG/HR Transdermal System SCD Clinical drug 29 29 View →
348831 Oxygen 99.2 % Gas for Inhalation SCD Clinical drug 28 411 View →
389201 Quetiapine 150 MG Oral Tablet SCD Clinical drug 28 106 View →
209468 Acetaminophen 250 MG / aspirin 250 MG / caffeine 65 MG Oral Tablet [Excedrin] SBD Branded drug 28 99 View →
1305100 Ethanol 0.75 ML/ML Topical Gel SCD Clinical drug 28 88 View →
581658 Ethanol 0.6 ML/ML Topical Gel SCD Clinical drug 28 76 View →
1232086 Rivaroxaban 20 MG Oral Tablet SCD Clinical drug 28 75 View →
105585 Methotrexate 2.5 MG Oral Tablet SCD Clinical drug 28 73 View →
197985 Minocycline 50 MG Oral Capsule SCD Clinical drug 28 72 View →
197650 Erythromycin 500 MG Oral Tablet SCD Clinical drug 28 68 View →
807832 24 HR levetiracetam 500 MG Extended Release Oral Tablet SCD Clinical drug 28 67 View →
856980 Acetaminophen 300 MG / hydrocodone bitartrate 10 MG Oral Tablet SCD Clinical drug 28 65 View →
856987 Acetaminophen 300 MG / hydrocodone bitartrate 5 MG Oral Tablet SCD Clinical drug 28 65 View →
856992 Acetaminophen 300 MG / hydrocodone bitartrate 7.5 MG Oral Tablet SCD Clinical drug 28 65 View →
313850 Amoxicillin 40 MG/ML Oral Suspension SCD Clinical drug 28 61 View →
1734203 10 ML ropivacaine hydrochloride 2 MG/ML Injection SCD Clinical drug 28 57 View →
630208 Albuterol 0.83 MG/ML Inhalation Solution SCD Clinical drug 28 56 View →
309097 Cefuroxime 250 MG Oral Tablet SCD Clinical drug 28 54 View →
639537 Candesartan cilexetil 32 MG Oral Tablet SCD Clinical drug 28 54 View →
603203 Erlotinib 100 MG Oral Tablet SCD Clinical drug 28 52 View →
603206 Erlotinib 150 MG Oral Tablet SCD Clinical drug 28 52 View →
603208 Erlotinib 25 MG Oral Tablet SCD Clinical drug 28 52 View →
1797913 Triamcinolone acetonide 0.055 MG/ACTUAT Metered Dose Nasal Spray SCD Clinical drug 28 49 View →
1369718 Pomalidomide 1 MG Oral Capsule SCD Clinical drug 28 48 View →
1369726 Pomalidomide 2 MG Oral Capsule SCD Clinical drug 28 48 View →
1369730 Pomalidomide 3 MG Oral Capsule SCD Clinical drug 28 48 View →
1369734 Pomalidomide 4 MG Oral Capsule SCD Clinical drug 28 48 View →
861356 0.8 ML fondaparinux sodium 12.5 MG/ML Prefilled Syringe SCD Clinical drug 28 48 View →
861360 0.5 ML fondaparinux sodium 5 MG/ML Prefilled Syringe SCD Clinical drug 28 48 View →
861363 0.4 ML fondaparinux sodium 12.5 MG/ML Prefilled Syringe SCD Clinical drug 28 48 View →
861365 0.6 ML fondaparinux sodium 12.5 MG/ML Prefilled Syringe SCD Clinical drug 28 48 View →
892646 Morphine sulfate 200 MG Extended Release Oral Tablet SCD Clinical drug 28 47 View →
1665061 4 ML verapamil hydrochloride 2.5 MG/ML Injection SCD Clinical drug 28 43 View →
543546 Nystatin 100000 UNT/ML Topical Cream SCD Clinical drug 28 42 View →
616539 Omeprazole 20 MG / sodium bicarbonate 1100 MG Oral Capsule SCD Clinical drug 28 42 View →
876980 Dimethicone 12 MG/ML Topical Lotion SCD Clinical drug 28 42 View →
1039012 Benzalkonium chloride 1.3 MG/ML Topical Spray SCD Clinical drug 28 40 View →
1658262 100 ML magnesium sulfate 40 MG/ML Injection SCD Clinical drug 28 40 View →
2056895 Everolimus 1 MG Oral Tablet SCD Clinical drug 28 40 View →
977427 Everolimus 0.25 MG Oral Tablet SCD Clinical drug 28 40 View →
977434 Everolimus 0.5 MG Oral Tablet SCD Clinical drug 28 40 View →
977438 Everolimus 0.75 MG Oral Tablet SCD Clinical drug 28 40 View →
308694 Benzoyl peroxide 0.05 MG/MG Topical Gel SCD Clinical drug 28 38 View →
724863 Armodafinil 50 MG Oral Tablet SCD Clinical drug 28 38 View →
1726324 5 ML irinotecan hydrochloride 20 MG/ML Injection SCD Clinical drug 28 36 View →
283523 Gabapentin 50 MG/ML Oral Solution SCD Clinical drug 28 36 View →
866910 Colesevelam hydrochloride 625 MG Oral Tablet SCD Clinical drug 28 36 View →

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.