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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
1421461 {24 (ethinyl estradiol 0.02 MG / norethindrone acetate 1 MG Oral Capsule) / 4 (ferrous fum... GPCK Generic pack 4 6 View →
1421467 Cysteamine 25 MG Delayed Release Oral Capsule SCD Clinical drug 4 6 View →
1421473 Cysteamine 25 MG Delayed Release Oral Capsule [Procysbi] SBD Branded drug 4 6 View →
1421475 Cysteamine 75 MG Delayed Release Oral Capsule SCD Clinical drug 4 6 View →
1421477 Cysteamine 75 MG Delayed Release Oral Capsule [Procysbi] SBD Branded drug 4 6 View →
1542820 Histamine dihydrochloride 0.5 MG/ML Topical Cream SCD Clinical drug 4 6 View →
1654862 3 ML insulin isophane, human 100 UNT/ML Pen Injector SCD Clinical drug 4 6 View →
1665210 100 ML ciprofloxacin 2 MG/ML Injection SCD Clinical drug 4 6 View →
1716209 Patiromer 8400 MG Powder for Oral Suspension SCD Clinical drug 4 6 View →
1716215 Patiromer 8400 MG Powder for Oral Suspension [Veltassa] SBD Branded drug 4 6 View →
1716217 Patiromer 16800 MG Powder for Oral Suspension SCD Clinical drug 4 6 View →
1716219 Patiromer 16800 MG Powder for Oral Suspension [Veltassa] SBD Branded drug 4 6 View →
1716221 Patiromer 25200 MG Powder for Oral Suspension SCD Clinical drug 4 6 View →
1716223 Patiromer 25200 MG Powder for Oral Suspension [Veltassa] SBD Branded drug 4 6 View →
1722349 Meloxicam 5 MG Oral Capsule SCD Clinical drug 4 6 View →
1722357 Meloxicam 10 MG Oral Capsule SCD Clinical drug 4 6 View →
1724809 10 ML bupivacaine hydrochloride 7.5 MG/ML Injection [Sensorcaine] SBD Branded drug 4 6 View →
1724810 30 ML bupivacaine hydrochloride 7.5 MG/ML Injection [Sensorcaine] SBD Branded drug 4 6 View →
1736037 Levetiracetam 1000 MG Tablet for Oral Suspension SCD Clinical drug 4 6 View →
1736044 Levetiracetam 1000 MG Tablet for Oral Suspension [Spritam] SBD Branded drug 4 6 View →
1736047 Levetiracetam 250 MG Tablet for Oral Suspension [Spritam] SBD Branded drug 4 6 View →
1736050 Levetiracetam 500 MG Tablet for Oral Suspension [Spritam] SBD Branded drug 4 6 View →
1736051 Levetiracetam 750 MG Tablet for Oral Suspension SCD Clinical drug 4 6 View →
1736053 Levetiracetam 750 MG Tablet for Oral Suspension [Spritam] SBD Branded drug 4 6 View →
1737468 100 ML tirofiban 0.05 MG/ML Injection [Aggrastat] SBD Branded drug 4 6 View →
1737472 250 ML tirofiban 0.05 MG/ML Injection [Aggrastat] SBD Branded drug 4 6 View →
1745061 10 ML bupivacaine liposome 13.3 MG/ML Injection SCD Clinical drug 4 6 View →
1789947 2 ML papaverine hydrochloride 30 MG/ML Injection SCD Clinical drug 4 6 View →
1813035 15 ML tirofiban 0.25 MG/ML Injection SCD Clinical drug 4 6 View →
1813037 15 ML tirofiban 0.25 MG/ML Injection [Aggrastat] SBD Branded drug 4 6 View →
197624 Disulfiram 500 MG Oral Tablet SCD Clinical drug 4 6 View →
197849 Isradipine 5 MG Oral Capsule SCD Clinical drug 4 6 View →
197956 Methyldopa 250 MG Oral Tablet SCD Clinical drug 4 6 View →
197958 Methyldopa 500 MG Oral Tablet SCD Clinical drug 4 6 View →
197980 Metyrosine 250 MG Oral Capsule SCD Clinical drug 4 6 View →
198142 Prednisolone 5 MG Oral Tablet SCD Clinical drug 4 6 View →
2045627 1 ML erenumab-aooe 70 MG/ML Prefilled Syringe SCD Clinical drug 4 6 View →
2045632 1 ML erenumab-aooe 70 MG/ML Prefilled Syringe [Aimovig] SBD Branded drug 4 6 View →
2045636 1 ML erenumab-aooe 70 MG/ML Auto-Injector SCD Clinical drug 4 6 View →
2045638 1 ML erenumab-aooe 70 MG/ML Auto-Injector [Aimovig] SBD Branded drug 4 6 View →
2048916 Estradiol 0.01 MG Vaginal Insert [Imvexxy] SBD Branded drug 4 6 View →
2048917 Estradiol 0.004 MG Vaginal Insert SCD Clinical drug 4 6 View →
2048918 Estradiol 0.004 MG Vaginal Insert [Imvexxy] SBD Branded drug 4 6 View →
2054309 {8 (estradiol 0.004 MG Vaginal Insert) } Pack GPCK Generic pack 4 6 View →
2054310 {8 (estradiol 0.004 MG Vaginal Insert [Imvexxy]) } Pack [Imvexxy 4 MCG Maintenance Pack] BPCK Branded pack 4 6 View →
2054312 {18 (estradiol 0.004 MG Vaginal Insert) } Pack GPCK Generic pack 4 6 View →
2054313 {18 (estradiol 0.004 MG Vaginal Insert [Imvexxy]) } Pack [Imvexxy 4 MCG Starter Pack] BPCK Branded pack 4 6 View →
2054315 {8 (estradiol 0.01 MG Vaginal Insert) } Pack GPCK Generic pack 4 6 View →
2054316 {8 (estradiol 0.01 MG Vaginal Insert [Imvexxy]) } Pack [Imvexxy 10 MCG Maintenance Pack] BPCK Branded pack 4 6 View →
2054317 {18 (estradiol 0.01 MG Vaginal Insert) } Pack GPCK Generic pack 4 6 View →
2054318 {18 (estradiol 0.01 MG Vaginal Insert [Imvexxy]) } Pack [Imvexxy 10 MCG Starter Pack] BPCK Branded pack 4 6 View →
2056669 {2 (1 ML erenumab-aooe 70 MG/ML Auto-Injector) } Pack GPCK Generic pack 4 6 View →
2056670 {2 (1 ML erenumab-aooe 70 MG/ML Auto-Injector [Aimovig]) } Pack [Aimovig Autoinjector (140... BPCK Branded pack 4 6 View →
2056680 {2 (1 ML erenumab-aooe 70 MG/ML Prefilled Syringe) } Pack GPCK Generic pack 4 6 View →
2056681 {2 (1 ML erenumab-aooe 70 MG/ML Prefilled Syringe [Aimovig]) } Pack [Aimovig Prefilled Syr... BPCK Branded pack 4 6 View →
2057200 0.5 ML filgrastim-aafi 0.6 MG/ML Prefilled Syringe SCD Clinical drug 4 6 View →
2057205 0.5 ML filgrastim-aafi 0.6 MG/ML Prefilled Syringe [Nivestym] SBD Branded drug 4 6 View →
2057209 1 ML filgrastim-aafi 0.3 MG/ML Injection SCD Clinical drug 4 6 View →
2057212 1 ML filgrastim-aafi 0.3 MG/ML Injection [Nivestym] SBD Branded drug 4 6 View →
2057215 0.8 ML filgrastim-aafi 0.6 MG/ML Prefilled Syringe SCD Clinical drug 4 6 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.