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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
312743 Quetiapine 100 MG Oral Tablet SCD Clinical drug 175 442 View →
403957 Tadalafil 5 MG Oral Tablet SCD Clinical drug 175 417 View →
1020364 Ethanol 0.62 ML/ML Topical Spray SCD Clinical drug 173 228 View →
197806 Ibuprofen 600 MG Oral Tablet SCD Clinical drug 172 660 View →
859747 Rosuvastatin calcium 10 MG Oral Tablet SCD Clinical drug 172 475 View →
866083 Buspirone hydrochloride 10 MG Oral Tablet SCD Clinical drug 172 475 View →
317174 Quetiapine 200 MG Oral Tablet SCD Clinical drug 172 436 View →
204602 Bacitracin 0.4 UNT/MG / neomycin 0.0035 MG/MG / polymyxin B 5 UNT/MG Topical Ointment SCD Clinical drug 172 275 View →
310964 Ibuprofen 200 MG Oral Capsule SCD Clinical drug 171 474 View →
402019 Tadalafil 20 MG Oral Tablet SCD Clinical drug 170 432 View →
616487 Quetiapine 50 MG Oral Tablet SCD Clinical drug 170 426 View →
312744 Quetiapine 25 MG Oral Tablet SCD Clinical drug 169 419 View →
861004 Metformin hydrochloride 1000 MG Oral Tablet SCD Clinical drug 168 561 View →
349490 Aripiprazole 15 MG Oral Tablet SCD Clinical drug 168 467 View →
349553 Aripiprazole 20 MG Oral Tablet SCD Clinical drug 168 462 View →
308297 Acetaminophen 250 MG / aspirin 250 MG / caffeine 65 MG Oral Tablet SCD Clinical drug 168 334 View →
314119 Nicotine 2 MG Chewing Gum SCD Clinical drug 168 323 View →
1086997 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / phenylephrine hydrochloride 5... SCD Clinical drug 168 202 View →
314076 Lisinopril 10 MG Oral Tablet SCD Clinical drug 167 472 View →
859751 Rosuvastatin calcium 20 MG Oral Tablet SCD Clinical drug 165 466 View →
308416 Aspirin 81 MG Delayed Release Oral Tablet SCD Clinical drug 165 350 View →
314077 Lisinopril 20 MG Oral Tablet SCD Clinical drug 164 466 View →
861007 Metformin hydrochloride 500 MG Oral Tablet SCD Clinical drug 163 580 View →
866018 Buspirone hydrochloride 15 MG Oral Tablet SCD Clinical drug 163 433 View →
854235 0.4 ML enoxaparin sodium 100 MG/ML Prefilled Syringe SCD Clinical drug 162 167 View →
312745 Quetiapine 300 MG Oral Tablet SCD Clinical drug 161 406 View →
892255 Levothyroxine sodium 0.3 MG Oral Tablet SCD Clinical drug 161 393 View →
997420 Fexofenadine hydrochloride 180 MG Oral Tablet SCD Clinical drug 160 389 View →
205322 Celecoxib 100 MG Oral Capsule SCD Clinical drug 159 476 View →
349547 Aripiprazole 30 MG Oral Tablet SCD Clinical drug 158 441 View →
866094 Buspirone hydrochloride 5 MG Oral Tablet SCD Clinical drug 158 417 View →
616483 Quetiapine 400 MG Oral Tablet SCD Clinical drug 158 405 View →
484814 Tadalafil 10 MG Oral Tablet SCD Clinical drug 158 400 View →
854228 0.3 ML enoxaparin sodium 100 MG/ML Prefilled Syringe SCD Clinical drug 158 163 View →
854238 0.6 ML enoxaparin sodium 100 MG/ML Prefilled Syringe SCD Clinical drug 158 163 View →
854241 0.8 ML enoxaparin sodium 100 MG/ML Prefilled Syringe SCD Clinical drug 158 163 View →
854248 1 ML enoxaparin sodium 100 MG/ML Prefilled Syringe SCD Clinical drug 158 163 View →
198051 Omeprazole 20 MG Delayed Release Oral Capsule SCD Clinical drug 155 555 View →
197884 Lisinopril 40 MG Oral Tablet SCD Clinical drug 155 439 View →
311354 Lisinopril 5 MG Oral Tablet SCD Clinical drug 155 434 View →
359818 Nicotine 4 MG Oral Lozenge SCD Clinical drug 155 404 View →
859424 Rosuvastatin calcium 5 MG Oral Tablet SCD Clinical drug 153 424 View →
359817 Nicotine 2 MG Oral Lozenge SCD Clinical drug 153 400 View →
808520 Isopropyl alcohol 0.7 ML/ML Topical Solution SCD Clinical drug 149 312 View →
859419 Rosuvastatin calcium 40 MG Oral Tablet SCD Clinical drug 148 426 View →
854245 0.8 ML enoxaparin sodium 150 MG/ML Prefilled Syringe SCD Clinical drug 148 153 View →
854252 1 ML enoxaparin sodium 150 MG/ML Prefilled Syringe SCD Clinical drug 148 153 View →
545626 Sodium monofluorophosphate 0.0076 MG/MG Toothpaste SCD Clinical drug 145 240 View →
311353 Lisinopril 2.5 MG Oral Tablet SCD Clinical drug 144 426 View →
866436 24 HR metoprolol succinate 50 MG Extended Release Oral Tablet SCD Clinical drug 144 364 View →
1043400 Acetaminophen 21.7 MG/ML / dextromethorphan hydrobromide 1 MG/ML / doxylamine succinate 0.... SCD Clinical drug 144 197 View →
830861 24 HR diltiazem hydrochloride 120 MG Extended Release Oral Capsule SCD Clinical drug 142 402 View →
311289 Levetiracetam 500 MG Oral Tablet SCD Clinical drug 142 328 View →
198145 Prednisone 10 MG Oral Tablet SCD Clinical drug 141 538 View →
312617 Prednisone 5 MG Oral Tablet SCD Clinical drug 141 409 View →
197391 Baclofen 10 MG Oral Tablet SCD Clinical drug 141 389 View →
979492 Losartan potassium 50 MG Oral Tablet SCD Clinical drug 141 362 View →
312615 Prednisone 20 MG Oral Tablet SCD Clinical drug 140 536 View →
308135 Amlodipine 10 MG Oral Tablet SCD Clinical drug 140 418 View →
830845 24 HR diltiazem hydrochloride 180 MG Extended Release Oral Capsule SCD Clinical drug 140 396 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.