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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
1307061 Buprenorphine 12 MG / naloxone 3 MG Sublingual Film SCD Clinical drug 26 26 View →
238083 Ketamine 100 MG/ML Injectable Solution SCD Clinical drug 26 26 View →
2601728 Pemetrexed 1000 MG Injection SCD Clinical drug 26 26 View →
313572 Vancomycin 50 MG/ML Injectable Solution SCD Clinical drug 26 26 View →
485246 Azacitidine 100 MG Injection SCD Clinical drug 26 26 View →
686400 Erythromycin ethylsuccinate 40 MG/ML Oral Suspension SCD Clinical drug 26 26 View →
727762 5 ML fulvestrant 50 MG/ML Prefilled Syringe SCD Clinical drug 26 26 View →
992766 {1 (9000 MG) (miconazole nitrate 20 MG/ML Vaginal Cream) / 3 (miconazole nitrate 200 MG Va... GPCK Generic pack 26 26 View →
312529 Potassium chloride 8 MEQ Extended Release Oral Tablet SCD Clinical drug 25 79 View →
855664 Diclofenac sodium 25 MG Delayed Release Oral Tablet SCD Clinical drug 25 78 View →
1359105 Diclofenac sodium 75 MG / misoprostol 0.2 MG Delayed Release Oral Tablet SCD Clinical drug 25 71 View →
749196 Clopidogrel 300 MG Oral Tablet SCD Clinical drug 25 69 View →
391937 Lactulose 667 MG/ML Oral Solution SCD Clinical drug 25 63 View →
1593072 24 HR dapagliflozin 5 MG / metformin hydrochloride 500 MG Extended Release Oral Tablet SCD Clinical drug 25 62 View →
855182 24 HR tolterodine tartrate 2 MG Extended Release Oral Capsule SCD Clinical drug 25 62 View →
722116 Ambrisentan 10 MG Oral Tablet SCD Clinical drug 25 59 View →
722122 Ambrisentan 5 MG Oral Tablet SCD Clinical drug 25 59 View →
403967 Zonisamide 50 MG Oral Capsule SCD Clinical drug 25 57 View →
433800 24 HR alprazolam 1 MG Extended Release Oral Tablet SCD Clinical drug 25 55 View →
248642 Fluoxetine 20 MG Oral Tablet SCD Clinical drug 25 54 View →
308988 Carbidopa 25 MG / levodopa 100 MG Extended Release Oral Tablet SCD Clinical drug 25 53 View →
308989 Carbidopa 50 MG / levodopa 200 MG Extended Release Oral Tablet SCD Clinical drug 25 53 View →
312055 Nystatin 100000 UNT/ML Oral Suspension SCD Clinical drug 25 48 View →
308868 Calcitriol 0.0005 MG Oral Capsule SCD Clinical drug 25 46 View →
283669 Pantoprazole 40 MG Injection SCD Clinical drug 25 44 View →
2676585 Twice-Daily clindamycin 0.01 MG/MG Topical Gel SCD Clinical drug 25 43 View →
1291082 Hydrocortisone acetate 25 MG Rectal Suppository SCD Clinical drug 25 42 View →
199450 Clobazam 10 MG Oral Tablet SCD Clinical drug 25 42 View →
1922720 Atrial Fibrillation sotalol hydrochloride 120 MG Oral Tablet SCD Clinical drug 25 41 View →
1922763 Atrial Fibrillation sotalol hydrochloride 160 MG Oral Tablet SCD Clinical drug 25 41 View →
197505 Cimetidine 200 MG Oral Tablet SCD Clinical drug 25 41 View →
312749 Quinapril 20 MG Oral Tablet SCD Clinical drug 25 41 View →
314203 Quinapril 40 MG Oral Tablet SCD Clinical drug 25 41 View →
242754 Levalbuterol 0.417 MG/ML Inhalation Solution SCD Clinical drug 25 37 View →
349590 Levalbuterol 0.103 MG/ML Inhalation Solution SCD Clinical drug 25 37 View →
403810 Aprepitant 80 MG Oral Capsule SCD Clinical drug 25 36 View →
403811 Aprepitant 125 MG Oral Capsule SCD Clinical drug 25 36 View →
644088 Aprepitant 40 MG Oral Capsule SCD Clinical drug 25 36 View →
754508 {1 (aprepitant 125 MG Oral Capsule) / 2 (aprepitant 80 MG Oral Capsule) } Pack GPCK Generic pack 25 36 View →
1038995 Sodium monofluorophosphate 0.0114 MG/MG Toothpaste SCD Clinical drug 25 35 View →
1093280 Docetaxel 10 MG/ML Injectable Solution SCD Clinical drug 25 35 View →
577208 Omega-3 acid ethyl esters (USP) 1000 MG Oral Capsule SCD Clinical drug 25 35 View →
308429 Atovaquone 150 MG/ML Oral Suspension SCD Clinical drug 25 33 View →
1191138 Doxorubicin hydrochloride 2 MG/ML Injectable Solution SCD Clinical drug 25 31 View →
307686 Acetaminophen 500 MG / caffeine 65 MG Oral Tablet SCD Clinical drug 25 30 View →
349194 Clonazepam 0.125 MG Disintegrating Oral Tablet SCD Clinical drug 25 30 View →
349195 Clonazepam 0.25 MG Disintegrating Oral Tablet SCD Clinical drug 25 30 View →
349196 Clonazepam 1 MG Disintegrating Oral Tablet SCD Clinical drug 25 30 View →
349197 Clonazepam 2 MG Disintegrating Oral Tablet SCD Clinical drug 25 30 View →
1987647 Lidocaine hydrochloride 40 MG/ML Topical Solution SCD Clinical drug 25 29 View →
311498 Menthol 100 MG/ML / methyl salicylate 150 MG/ML Topical Cream SCD Clinical drug 25 29 View →
351261 Lansoprazole 15 MG Disintegrating Oral Tablet SCD Clinical drug 25 28 View →
1090463 Brompheniramine maleate 0.2 MG/ML / dextromethorphan hydrobromide 1 MG/ML / phenylephrine... SCD Clinical drug 25 27 View →
1659960 Acetaminophen 650 MG / diphenhydramine hydrochloride 25 MG / phenylephrine hydrochloride 1... SCD Clinical drug 25 27 View →
282486 Bumetanide 0.25 MG/ML Injectable Solution SCD Clinical drug 25 27 View →
1087043 Phenylephrine hydrochloride 10 MG/ML Nasal Spray SCD Clinical drug 25 26 View →
1438497 Cocoa butter 0.884 MG/MG / phenylephrine hydrochloride 0.0025 MG/MG Rectal Suppository SCD Clinical drug 25 26 View →
313415 Tobramycin 3 MG/ML Ophthalmic Solution SCD Clinical drug 25 26 View →
1740898 Mitomycin 40 MG Injection SCD Clinical drug 25 25 View →
197795 Hydroquinone 40 MG/ML Topical Cream SCD Clinical drug 25 25 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.