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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
1041849 Ethanol 0.7 ML/ML Topical Spray SCD Clinical drug 848 944 View →
797544 Isopropyl alcohol 0.7 ML/ML Medicated Pad SCD Clinical drug 496 698 View →
198440 Acetaminophen 500 MG Oral Tablet SCD Clinical drug 406 931 View →
310965 Ibuprofen 200 MG Oral Tablet SCD Clinical drug 388 1,108 View →
483450 Pregabalin 75 MG Oral Capsule SCD Clinical drug 367 989 View →
312172 Oxygen 99 % Gas for Inhalation SCD Clinical drug 364 2,837 View →
483438 Pregabalin 100 MG Oral Capsule SCD Clinical drug 364 956 View →
483448 Pregabalin 50 MG Oral Capsule SCD Clinical drug 362 965 View →
483440 Pregabalin 150 MG Oral Capsule SCD Clinical drug 355 960 View →
483446 Pregabalin 200 MG Oral Capsule SCD Clinical drug 335 906 View →
483442 Pregabalin 25 MG Oral Capsule SCD Clinical drug 334 901 View →
483444 Pregabalin 300 MG Oral Capsule SCD Clinical drug 325 887 View →
581662 Ethanol 0.7 ML/ML Topical Gel SCD Clinical drug 321 595 View →
577127 Pregabalin 225 MG Oral Capsule SCD Clinical drug 318 885 View →
966221 Levothyroxine sodium 0.05 MG Oral Tablet SCD Clinical drug 291 648 View →
966222 Levothyroxine sodium 0.075 MG Oral Tablet SCD Clinical drug 290 650 View →
966225 Levothyroxine sodium 0.15 MG Oral Tablet SCD Clinical drug 288 636 View →
892246 Levothyroxine sodium 0.1 MG Oral Tablet SCD Clinical drug 287 652 View →
966224 Levothyroxine sodium 0.125 MG Oral Tablet SCD Clinical drug 287 639 View →
1046593 Benzalkonium chloride 1.3 MG/ML Medicated Liquid Soap SCD Clinical drug 284 482 View →
2282911 Ethanol 0.71 ML/ML Topical Gel SCD Clinical drug 283 288 View →
966253 Levothyroxine sodium 0.088 MG Oral Tablet SCD Clinical drug 282 639 View →
966220 Levothyroxine sodium 0.025 MG Oral Tablet SCD Clinical drug 278 630 View →
966248 Levothyroxine sodium 0.112 MG Oral Tablet SCD Clinical drug 270 621 View →
966270 Levothyroxine sodium 0.137 MG Oral Tablet SCD Clinical drug 261 618 View →
238910 Benzocaine 0.2 MG/MG Oral Gel SCD Clinical drug 261 269 View →
966249 Levothyroxine sodium 0.175 MG Oral Tablet SCD Clinical drug 255 603 View →
106258 Hydrocortisone 10 MG/ML Topical Cream SCD Clinical drug 253 355 View →
307668 Acetaminophen 32 MG/ML Oral Suspension SCD Clinical drug 252 324 View →
209884 Zinc pyrithione 10 MG/ML Medicated Shampoo SCD Clinical drug 244 405 View →
308915 Calcium carbonate 750 MG Chewable Tablet SCD Clinical drug 242 309 View →
617310 Atorvastatin 20 MG Oral Tablet SCD Clinical drug 236 649 View →
617311 Atorvastatin 40 MG Oral Tablet SCD Clinical drug 233 615 View →
1737778 Lidocaine 0.04 MG/MG Medicated Patch SCD Clinical drug 232 813 View →
310431 Gabapentin 300 MG Oral Capsule SCD Clinical drug 230 817 View →
892251 Levothyroxine sodium 0.2 MG Oral Tablet SCD Clinical drug 228 550 View →
310273 Famotidine 20 MG Oral Tablet SCD Clinical drug 224 699 View →
310430 Gabapentin 100 MG Oral Capsule SCD Clinical drug 218 692 View →
617312 Atorvastatin 10 MG Oral Tablet SCD Clinical drug 218 559 View →
1049630 Diphenhydramine hydrochloride 25 MG Oral Tablet SCD Clinical drug 214 359 View →
1014678 Cetirizine hydrochloride 10 MG Oral Tablet SCD Clinical drug 213 636 View →
1038558 Benzalkonium chloride 1.3 MG/ML Medicated Pad SCD Clinical drug 211 381 View →
849574 Naproxen sodium 220 MG Oral Tablet SCD Clinical drug 210 595 View →
581660 Ethanol 0.62 ML/ML Topical Gel SCD Clinical drug 207 319 View →
891775 Sodium fluoride 0.00243 MG/MG Toothpaste SCD Clinical drug 205 408 View →
259255 Atorvastatin 80 MG Oral Tablet SCD Clinical drug 203 538 View →
1000990 Oxymetazoline hydrochloride 0.5 MG/ML Nasal Spray SCD Clinical drug 199 228 View →
416783 Sodium fluoride 0.0024 MG/MG Toothpaste SCD Clinical drug 198 315 View →
311372 Loratadine 10 MG Oral Tablet SCD Clinical drug 196 580 View →
562600 Salicylic acid 20 MG/ML Medicated Liquid Soap SCD Clinical drug 192 247 View →
310432 Gabapentin 400 MG Oral Capsule SCD Clinical drug 189 615 View →
197807 Ibuprofen 800 MG Oral Tablet SCD Clinical drug 186 692 View →
311975 Nicotine 4 MG Chewing Gum SCD Clinical drug 186 342 View →
205323 Celecoxib 200 MG Oral Capsule SCD Clinical drug 185 573 View →
197803 Ibuprofen 20 MG/ML Oral Suspension SCD Clinical drug 185 262 View →
748797 Inert ingredients 1 MG Oral Tablet SCD Clinical drug 184 266 View →
606726 Esomeprazole 20 MG Delayed Release Oral Capsule SCD Clinical drug 182 470 View →
402131 Aripiprazole 5 MG Oral Tablet SCD Clinical drug 179 492 View →
349545 Aripiprazole 10 MG Oral Tablet SCD Clinical drug 178 481 View →
602964 Aripiprazole 2 MG Oral Tablet SCD Clinical drug 176 478 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.