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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
1723232 1 ML desmopressin acetate 0.004 MG/ML Injection SCD Clinical drug 22 24 View →
307684 Acetaminophen 33.3 MG/ML Oral Solution SCD Clinical drug 22 24 View →
829926 10 ML arsenic trioxide 1 MG/ML Injection SCD Clinical drug 22 24 View →
1654008 20 ML etomidate 2 MG/ML Injection SCD Clinical drug 22 23 View →
992460 1 ML promethazine hydrochloride 25 MG/ML Injection SCD Clinical drug 22 23 View →
1090635 Alanine 8.8 MG/ML / arginine 4.89 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SCD Clinical drug 22 22 View →
1090639 Alanine 8.8 MG/ML / arginine 4.89 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SBD Branded drug 22 22 View →
1234532 Calamine 80 MG/ML / pramoxine hydrochloride 10 MG/ML Topical Lotion SCD Clinical drug 22 22 View →
1234546 Pramoxine hydrochloride 10 MG/ML / zinc acetate 1 MG/ML Topical Lotion SCD Clinical drug 22 22 View →
1730078 2 ML chlorpromazine hydrochloride 25 MG/ML Injection SCD Clinical drug 22 22 View →
197670 Estrogens, esterified (USP) 1.25 MG / methyltestosterone 2.5 MG Oral Tablet SCD Clinical drug 22 22 View →
199689 Acitretin 10 MG Oral Capsule SCD Clinical drug 22 22 View →
199690 Acitretin 25 MG Oral Capsule SCD Clinical drug 22 22 View →
2123072 NDA021457 200 ACTUAT albuterol 0.09 MG/ACTUAT Metered Dose Inhaler SCD Clinical drug 22 22 View →
2201521 Zinc sulfate 3 MG/ML Injectable Solution SCD Clinical drug 22 22 View →
238084 Ketamine 50 MG/ML Injectable Solution SCD Clinical drug 22 22 View →
636631 Decitabine 50 MG Injection SCD Clinical drug 22 22 View →
800998 Alanine 8.8 MG/ML / arginine 4.89 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SCD Clinical drug 22 22 View →
801000 Alanine 8.8 MG/ML / arginine 4.89 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SBD Branded drug 22 22 View →
801010 Alanine 5.7 MG/ML / arginine 3.16 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SCD Clinical drug 22 22 View →
801012 Alanine 5.7 MG/ML / arginine 3.16 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassiu... SBD Branded drug 22 22 View →
801019 Alanine 10.4 MG/ML / arginine 5.75 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassi... SCD Clinical drug 22 22 View →
801021 Alanine 10.4 MG/ML / arginine 5.75 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassi... SBD Branded drug 22 22 View →
801029 Alanine 10.4 MG/ML / arginine 5.75 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassi... SCD Clinical drug 22 22 View →
801031 Alanine 10.4 MG/ML / arginine 5.75 MG/ML / calcium chloride 0.004 MEQ/ML / dibasic potassi... SBD Branded drug 22 22 View →
966219 Levothyroxine sodium 0.5 MG Injection SCD Clinical drug 22 22 View →
998671 168 HR clonidine 0.00417 MG/HR Transdermal System SCD Clinical drug 22 21 View →
998675 168 HR clonidine 0.00833 MG/HR Transdermal System SCD Clinical drug 22 21 View →
998679 168 HR clonidine 0.0125 MG/HR Transdermal System SCD Clinical drug 22 21 View →
2707547 Semaglutide 1.5 MG Oral Tablet SCD Clinical drug 22 20 View →
2707551 Semaglutide 4 MG Oral Tablet SCD Clinical drug 22 20 View →
2707555 Semaglutide 9 MG Oral Tablet SCD Clinical drug 22 20 View →
310245 24 HR etodolac 400 MG Extended Release Oral Tablet SCD Clinical drug 21 69 View →
310793 Hydrochlorothiazide 12.5 MG / irbesartan 300 MG Oral Tablet SCD Clinical drug 21 68 View →
310247 24 HR etodolac 600 MG Extended Release Oral Tablet SCD Clinical drug 21 62 View →
897710 Hydromorphone hydrochloride 8 MG Oral Tablet SCD Clinical drug 21 62 View →
197316 Albuterol 2 MG Oral Tablet SCD Clinical drug 21 47 View →
197971 Methylprednisolone 32 MG Oral Tablet SCD Clinical drug 21 46 View →
197973 Methylprednisolone 8 MG Oral Tablet SCD Clinical drug 21 46 View →
328161 Methylprednisolone 16 MG Oral Tablet SCD Clinical drug 21 46 View →
828269 Loratadine 10 MG Oral Capsule SCD Clinical drug 21 45 View →
861740 Glipizide 5 MG / metformin hydrochloride 500 MG Oral Tablet SCD Clinical drug 21 45 View →
1010900 Lidocaine hydrochloride 5 MG/ML Injectable Solution SCD Clinical drug 21 44 View →
226552 72 HR scopolamine 0.0139 MG/HR Transdermal System SCD Clinical drug 21 44 View →
834348 Amiodarone hydrochloride 400 MG Oral Tablet SCD Clinical drug 21 42 View →
1010755 Epinephrine 0.01 MG/ML / lidocaine hydrochloride 10 MG/ML Injectable Solution [Xylocaine w... SBD Branded drug 21 41 View →
1550957 Diphenhydramine hydrochloride 25 MG / naproxen sodium 220 MG Oral Tablet SCD Clinical drug 21 41 View →
197464 Clorazepate dipotassium 15 MG Oral Tablet SCD Clinical drug 21 41 View →
1737567 5 ML lidocaine hydrochloride 10 MG/ML Injection [Xylocaine] SBD Branded drug 21 40 View →
859975 Asenapine 10 MG Sublingual Tablet SCD Clinical drug 21 40 View →
859981 Asenapine 5 MG Sublingual Tablet SCD Clinical drug 21 40 View →
1737762 5 ML lidocaine hydrochloride 20 MG/ML Injection [Xylocaine] SBD Branded drug 21 39 View →
1806380 Once-Daily gabapentin 300 MG Oral Tablet SCD Clinical drug 21 39 View →
1806382 Once-Daily gabapentin 600 MG Oral Tablet SCD Clinical drug 21 39 View →
351172 Dutasteride 0.5 MG Oral Capsule SCD Clinical drug 21 39 View →
359494 Eletriptan 40 MG Oral Tablet SCD Clinical drug 21 38 View →
197312 Acyclovir 0.05 MG/MG Topical Ointment SCD Clinical drug 21 37 View →
1801279 Sugar-Free cholestyramine resin 4000 MG Powder for Oral Suspension SCD Clinical drug 21 36 View →
197506 Cimetidine 300 MG Oral Tablet SCD Clinical drug 21 35 View →
1189915 Colloidal oatmeal 20 MG/ML Topical Cream SCD Clinical drug 21 33 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.