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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
1807634 500 ML sodium chloride 9 MG/ML Injection SCD Clinical drug 45 118 View →
903456 Liothyronine sodium 0.005 MG Oral Tablet SCD Clinical drug 45 114 View →
312515 Potassium chloride 1.33 MEQ/ML Oral Solution SCD Clinical drug 45 91 View →
198467 Aspirin 325 MG Delayed Release Oral Tablet SCD Clinical drug 45 86 View →
1099563 24 HR divalproex sodium 250 MG Extended Release Oral Tablet SCD Clinical drug 45 84 View →
307675 Acetaminophen 32 MG/ML Oral Solution SCD Clinical drug 45 78 View →
317173 Captopril 25 MG Oral Tablet SCD Clinical drug 45 77 View →
311373 Loratadine 10 MG Disintegrating Oral Tablet SCD Clinical drug 45 72 View →
898346 Amlodipine 10 MG / benazepril hydrochloride 40 MG Oral Capsule SCD Clinical drug 45 71 View →
476556 Emtricitabine 200 MG / tenofovir disoproxil fumarate 300 MG Oral Tablet SCD Clinical drug 45 70 View →
1094147 Phenazopyridine hydrochloride 99.5 MG Oral Tablet SCD Clinical drug 45 68 View →
1373483 Dimethyl fumarate 120 MG Delayed Release Oral Capsule SCD Clinical drug 45 68 View →
1743704 Methylprednisolone 125 MG Injection SCD Clinical drug 45 48 View →
1193358 100 ML levetiracetam 10 MG/ML Injection SCD Clinical drug 45 45 View →
1193362 100 ML levetiracetam 5 MG/ML Injection SCD Clinical drug 45 45 View →
238154 Acetaminophen 325 MG / butalbital 50 MG / caffeine 40 MG Oral Tablet SCD Clinical drug 44 167 View →
197443 Carbidopa 10 MG / levodopa 100 MG Oral Tablet SCD Clinical drug 44 129 View →
995632 Meclizine hydrochloride 25 MG Chewable Tablet SCD Clinical drug 44 118 View →
311264 Lamotrigine 25 MG Tablet for Oral Suspension SCD Clinical drug 44 114 View →
311265 Lamotrigine 5 MG Tablet for Oral Suspension SCD Clinical drug 44 114 View →
854905 Bisoprolol fumarate 5 MG Oral Tablet SCD Clinical drug 44 106 View →
429503 Hydrochlorothiazide 12.5 MG Oral Tablet SCD Clinical drug 44 100 View →
722126 Amlodipine 10 MG / valsartan 160 MG Oral Tablet SCD Clinical drug 44 100 View →
722131 Amlodipine 10 MG / valsartan 320 MG Oral Tablet SCD Clinical drug 44 100 View →
722134 Amlodipine 5 MG / valsartan 160 MG Oral Tablet SCD Clinical drug 44 100 View →
722137 Amlodipine 5 MG / valsartan 320 MG Oral Tablet SCD Clinical drug 44 100 View →
597971 Amlodipine 2.5 MG / atorvastatin 10 MG Oral Tablet SCD Clinical drug 44 99 View →
597974 Amlodipine 2.5 MG / atorvastatin 20 MG Oral Tablet SCD Clinical drug 44 99 View →
597993 Amlodipine 2.5 MG / atorvastatin 40 MG Oral Tablet SCD Clinical drug 44 99 View →
315223 Sumatriptan 25 MG Oral Tablet SCD Clinical drug 44 95 View →
260376 Terazosin 10 MG Oral Capsule SCD Clinical drug 44 86 View →
1358762 Ethinyl estradiol 0.02 MG / norethindrone acetate 1 MG Oral Tablet SCD Clinical drug 44 69 View →
359751 Menthol 7.6 MG Oral Lozenge SCD Clinical drug 44 58 View →
1665021 Ceftriaxone 1000 MG Injection SCD Clinical drug 44 53 View →
1722934 Meropenem 500 MG Injection SCD Clinical drug 44 52 View →
1722939 Meropenem 1000 MG Injection SCD Clinical drug 44 52 View →
1649405 Doxycycline hyclate 50 MG Oral Capsule SCD Clinical drug 43 136 View →
199884 Levofloxacin 250 MG Oral Tablet SCD Clinical drug 43 133 View →
310459 Gemfibrozil 600 MG Oral Tablet SCD Clinical drug 43 123 View →
1807639 1000 ML sodium chloride 9 MG/ML Injection SCD Clinical drug 43 113 View →
197905 Lovastatin 40 MG Oral Tablet SCD Clinical drug 43 113 View →
856556 Propranolol hydrochloride 60 MG Oral Tablet SCD Clinical drug 43 111 View →
477367 Solifenacin succinate 5 MG Oral Tablet SCD Clinical drug 43 110 View →
314285 Zonisamide 100 MG Oral Capsule SCD Clinical drug 43 102 View →
402695 24 HR felodipine 10 MG Extended Release Oral Tablet SCD Clinical drug 43 102 View →
313215 Terazosin 1 MG Oral Capsule SCD Clinical drug 43 90 View →
749780 {3 (azithromycin 500 MG Oral Tablet) } Pack GPCK Generic pack 43 83 View →
886662 Flecainide acetate 50 MG Oral Tablet SCD Clinical drug 43 79 View →
831103 Diltiazem hydrochloride 60 MG Oral Tablet SCD Clinical drug 43 77 View →
432402 Cinacalcet 30 MG Oral Tablet SCD Clinical drug 43 75 View →
833217 Diltiazem hydrochloride 30 MG Oral Tablet SCD Clinical drug 43 75 View →
311995 Nitrofurantoin, macrocrystals 50 MG Oral Capsule SCD Clinical drug 43 72 View →
1049182 Phenylephrine hydrochloride 10 MG Oral Tablet SCD Clinical drug 43 70 View →
198369 Torsemide 10 MG Oral Tablet SCD Clinical drug 43 70 View →
312635 Prochlorperazine 5 MG Oral Tablet SCD Clinical drug 43 70 View →
308963 Captopril 12.5 MG Oral Tablet SCD Clinical drug 43 69 View →
1923422 Sotalol hydrochloride 120 MG Oral Tablet SCD Clinical drug 43 67 View →
197978 Metolazone 10 MG Oral Tablet SCD Clinical drug 43 67 View →
403878 Imatinib 100 MG Oral Tablet SCD Clinical drug 43 67 View →
1607792 Deferasirox 360 MG Oral Tablet SCD Clinical drug 43 64 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.