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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
309336 50 ML clindamycin 18 MG/ML Injection SCD Clinical drug 20 20 View →
861375 Sevelamer carbonate 800 MG Powder for Oral Suspension SCD Clinical drug 20 20 View →
894859 Acitretin 17.5 MG Oral Capsule SCD Clinical drug 20 20 View →
898362 Benazepril hydrochloride 10 MG / hydrochlorothiazide 12.5 MG Oral Tablet SCD Clinical drug 20 20 View →
898372 Benazepril hydrochloride 20 MG / hydrochlorothiazide 25 MG Oral Tablet SCD Clinical drug 20 20 View →
351223 Ziprasidone 20 MG Injection SCD Clinical drug 20 18 View →
979549 Phendimetrazine tartrate 35 MG Oral Tablet SCD Clinical drug 19 86 View →
153008 Ibuprofen 200 MG Oral Tablet [Advil] SBD Branded drug 19 82 View →
198108 Piroxicam 20 MG Oral Capsule SCD Clinical drug 19 57 View →
198036 24 HR nifedipine 90 MG Extended Release Oral Tablet SCD Clinical drug 19 47 View →
857706 Diclofenac sodium 50 MG / misoprostol 0.2 MG Delayed Release Oral Tablet SCD Clinical drug 19 46 View →
897659 Verapamil hydrochloride 120 MG Extended Release Oral Tablet SCD Clinical drug 19 45 View →
833213 Dexlansoprazole 60 MG Delayed Release Oral Capsule SCD Clinical drug 19 44 View →
1000114 Medroxyprogesterone acetate 10 MG Oral Tablet SCD Clinical drug 19 43 View →
198252 Tetracycline hydrochloride 500 MG Oral Capsule SCD Clinical drug 19 43 View →
310489 24 HR glipizide 2.5 MG Extended Release Oral Tablet SCD Clinical drug 19 43 View →
861736 Glipizide 2.5 MG / metformin hydrochloride 500 MG Oral Tablet SCD Clinical drug 19 40 View →
197466 Clorazepate dipotassium 7.5 MG Oral Tablet SCD Clinical drug 19 39 View →
359228 Azathioprine 100 MG Oral Tablet SCD Clinical drug 19 39 View →
637119 Menthol 4.8 MG Oral Lozenge SCD Clinical drug 19 39 View →
905092 {4 (risedronate sodium 35 MG Oral Tablet) } Pack GPCK Generic pack 19 39 View →
905100 {12 (risedronate sodium 35 MG Oral Tablet) } Pack GPCK Generic pack 19 39 View →
1010035 Lidocaine hydrochloride 10 MG/ML Injectable Solution [Xylocaine] SBD Branded drug 19 38 View →
199192 Famciclovir 125 MG Oral Tablet SCD Clinical drug 19 37 View →
199193 Famciclovir 250 MG Oral Tablet SCD Clinical drug 19 37 View →
313450 Tretinoin 0.0001 MG/MG Topical Gel SCD Clinical drug 19 37 View →
313451 Tretinoin 0.00025 MG/MG Topical Gel SCD Clinical drug 19 37 View →
359296 Calcium acetate 667 MG Oral Capsule SCD Clinical drug 19 37 View →
1744001 Emtricitabine 100 MG / tenofovir disoproxil fumarate 150 MG Oral Tablet SCD Clinical drug 19 35 View →
1744005 Emtricitabine 133 MG / tenofovir disoproxil fumarate 200 MG Oral Tablet SCD Clinical drug 19 35 View →
1744009 Emtricitabine 167 MG / tenofovir disoproxil fumarate 250 MG Oral Tablet SCD Clinical drug 19 35 View →
1606337 Asenapine 2.5 MG Sublingual Tablet SCD Clinical drug 19 34 View →
309140 Cevimeline hydrochloride 30 MG Oral Capsule SCD Clinical drug 19 34 View →
197840 Isosorbide dinitrate 40 MG Oral Tablet SCD Clinical drug 19 32 View →
1010077 Lidocaine hydrochloride 0.04 MG/MG Topical Gel SCD Clinical drug 19 31 View →
283407 Mirtazapine 30 MG Disintegrating Oral Tablet SCD Clinical drug 19 31 View →
749860 {21 (ethinyl estradiol 0.035 MG / norgestimate 0.25 MG Oral Tablet) / 7 (inert ingredients... GPCK Generic pack 19 31 View →
1094560 Zinc oxide 0.4 MG/MG Paste SCD Clinical drug 19 30 View →
197684 Etodolac 200 MG Oral Capsule SCD Clinical drug 19 30 View →
311196 24 HR isosorbide mononitrate 120 MG Extended Release Oral Tablet SCD Clinical drug 19 30 View →
310197 Estrogens, conjugated (USP) 0.625 MG Oral Tablet SCD Clinical drug 19 28 View →
311700 Midazolam 1 MG/ML Injectable Solution SCD Clinical drug 19 28 View →
858751 Ursodiol 250 MG Oral Tablet SCD Clinical drug 19 28 View →
616541 Omeprazole 40 MG / sodium bicarbonate 1100 MG Oral Capsule SCD Clinical drug 19 27 View →
849515 Desmopressin acetate 0.1 MG Oral Tablet SCD Clinical drug 19 27 View →
197508 Cimetidine 800 MG Oral Tablet SCD Clinical drug 19 26 View →
1996246 Daptomycin 350 MG Injection SCD Clinical drug 19 25 View →
861427 Propafenone hydrochloride 225 MG Oral Tablet SCD Clinical drug 19 25 View →
861430 Propafenone hydrochloride 300 MG Oral Tablet SCD Clinical drug 19 25 View →
1426334 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / doxylamine succinate 6.25 MG... SCD Clinical drug 19 24 View →
2103182 1 ML vasopressin (USP) 20 UNT/ML Injection SCD Clinical drug 19 24 View →
597823 Tobramycin 40 MG/ML Injectable Solution SCD Clinical drug 19 24 View →
1234571 Phenylephrine hydrochloride 100 MG/ML Ophthalmic Solution SCD Clinical drug 19 23 View →
1597129 5000 MG testosterone 0.01 MG/MG Topical Gel SCD Clinical drug 19 23 View →
1718900 20 ML dexmedetomidine 0.004 MG/ML Injection SCD Clinical drug 19 23 View →
1728055 5 ML palonosetron 0.05 MG/ML Injection SCD Clinical drug 19 23 View →
309311 Cisplatin 1 MG/ML Injectable Solution SCD Clinical drug 19 23 View →
309370 Clotrimazole 10 MG/ML Topical Solution SCD Clinical drug 19 23 View →
833144 Milnacipran hydrochloride 50 MG Oral Tablet SCD Clinical drug 19 23 View →
251267 Clotrimazole 0.01 MG/MG Medicated Bar Soap SCD Clinical drug 19 22 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.