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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
1593856 Lisdexamfetamine dimesylate 10 MG Oral Capsule SCD Clinical drug 118 119 View →
314229 Sildenafil 100 MG Oral Tablet SCD Clinical drug 117 346 View →
596930 Duloxetine 30 MG Delayed Release Oral Capsule SCD Clinical drug 117 338 View →
311288 Levetiracetam 250 MG Oral Tablet SCD Clinical drug 117 268 View →
205326 Lisinopril 30 MG Oral Tablet SCD Clinical drug 116 362 View →
313585 24 HR venlafaxine 75 MG Extended Release Oral Capsule SCD Clinical drug 116 361 View →
312078 Olanzapine 5 MG Oral Tablet SCD Clinical drug 116 320 View →
199888 Topiramate 25 MG Oral Tablet SCD Clinical drug 116 313 View →
577957 Amphetamine aspartate 3.75 MG / amphetamine sulfate 3.75 MG / dextroamphetamine saccharate... SCD Clinical drug 116 175 View →
856783 Amitriptyline hydrochloride 10 MG Oral Tablet SCD Clinical drug 115 254 View →
313096 Spironolactone 25 MG Oral Tablet SCD Clinical drug 114 355 View →
1040041 Lurasidone hydrochloride 80 MG Oral Tablet SCD Clinical drug 114 306 View →
311290 Levetiracetam 750 MG Oral Tablet SCD Clinical drug 114 246 View →
855633 Diclofenac sodium 0.01 MG/MG Topical Gel SCD Clinical drug 114 201 View →
1000058 Doxepin 100 MG Oral Capsule SCD Clinical drug 114 190 View →
198014 Naproxen 500 MG Oral Tablet SCD Clinical drug 113 418 View →
596934 Duloxetine 60 MG Delayed Release Oral Capsule SCD Clinical drug 113 316 View →
314154 Olanzapine 10 MG Oral Tablet SCD Clinical drug 113 303 View →
387003 Levetiracetam 1000 MG Oral Tablet SCD Clinical drug 113 246 View →
310672 Haloperidol 5 MG Oral Tablet SCD Clinical drug 113 184 View →
198029 24 HR nicotine 0.583 MG/HR Transdermal System SCD Clinical drug 113 168 View →
866924 Metoprolol tartrate 25 MG Oral Tablet SCD Clinical drug 112 326 View →
199889 Topiramate 100 MG Oral Tablet SCD Clinical drug 112 312 View →
151226 Topiramate 50 MG Oral Tablet SCD Clinical drug 112 310 View →
866511 Metoprolol tartrate 100 MG Oral Tablet SCD Clinical drug 112 306 View →
993541 24 HR bupropion hydrochloride 150 MG Extended Release Oral Tablet SCD Clinical drug 112 287 View →
204754 Petrolatum 1 MG/MG Topical Ointment SCD Clinical drug 112 232 View →
1428947 Lenalidomide 20 MG Oral Capsule SCD Clinical drug 112 190 View →
602910 Lenalidomide 10 MG Oral Capsule SCD Clinical drug 112 190 View →
602912 Lenalidomide 5 MG Oral Capsule SCD Clinical drug 112 190 View →
643712 Lenalidomide 15 MG Oral Capsule SCD Clinical drug 112 190 View →
643720 Lenalidomide 25 MG Oral Capsule SCD Clinical drug 112 190 View →
686379 Celecoxib 50 MG Oral Capsule SCD Clinical drug 111 342 View →
349201 Valsartan 160 MG Oral Tablet SCD Clinical drug 111 312 View →
313782 Acetaminophen 325 MG Oral Tablet SCD Clinical drug 111 194 View →
1243679 Acetaminophen 325 MG / guaifenesin 200 MG / phenylephrine hydrochloride 5 MG Oral Tablet SCD Clinical drug 111 130 View →
200033 Carvedilol 25 MG Oral Tablet SCD Clinical drug 110 304 View →
312830 Risperidone 1 MG Oral Tablet SCD Clinical drug 109 237 View →
198031 24 HR nicotine 0.292 MG/HR Transdermal System SCD Clinical drug 109 164 View →
349514 Celecoxib 400 MG Oral Capsule SCD Clinical drug 108 341 View →
308136 Amlodipine 2.5 MG Oral Tablet SCD Clinical drug 108 306 View →
349199 Valsartan 80 MG Oral Tablet SCD Clinical drug 108 302 View →
856762 Amitriptyline hydrochloride 100 MG Oral Tablet SCD Clinical drug 108 217 View →
797730 Povidone-iodine 100 MG/ML Medicated Pad SCD Clinical drug 108 133 View →
197944 Methocarbamol 750 MG Oral Tablet SCD Clinical drug 107 378 View →
308191 Amoxicillin 500 MG Oral Capsule SCD Clinical drug 107 298 View →
198428 Lamotrigine 150 MG Oral Tablet SCD Clinical drug 107 285 View →
312831 Risperidone 2 MG Oral Tablet SCD Clinical drug 107 233 View →
310621 12 HR guaifenesin 1200 MG Extended Release Oral Tablet SCD Clinical drug 107 193 View →
998740 Docusate sodium 50 MG / sennosides, USP 8.6 MG Oral Tablet SCD Clinical drug 107 191 View →
349405 Olmesartan medoxomil 40 MG Oral Tablet SCD Clinical drug 106 287 View →
197320 Allopurinol 300 MG Oral Tablet SCD Clinical drug 106 250 View →
1020477 Diphenhydramine hydrochloride 50 MG Oral Capsule SCD Clinical drug 106 183 View →
1014673 Cetirizine hydrochloride 1 MG/ML Oral Solution SCD Clinical drug 106 174 View →
349594 Atomoxetine 40 MG Oral Capsule SCD Clinical drug 106 148 View →
240698 Sodium fluoride 0.5 MG/ML Mouthwash SCD Clinical drug 106 122 View →
830801 24 HR diltiazem hydrochloride 300 MG Extended Release Oral Capsule SCD Clinical drug 105 323 View →
309114 Cephalexin 500 MG Oral Capsule SCD Clinical drug 105 315 View →
198429 Lamotrigine 200 MG Oral Tablet SCD Clinical drug 105 280 View →
314035 Haloperidol 10 MG Oral Tablet SCD Clinical drug 105 174 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.