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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
2619678 250 MG estradiol 0.001 MG/MG Topical Gel [Divigel] SBD Branded drug 5 10 View →
2619680 500 MG estradiol 0.001 MG/MG Topical Gel [Divigel] SBD Branded drug 5 10 View →
2619682 750 MG estradiol 0.001 MG/MG Topical Gel [Divigel] SBD Branded drug 5 10 View →
2619684 1000 MG estradiol 0.001 MG/MG Topical Gel [Divigel] SBD Branded drug 5 10 View →
2619686 1250 MG estradiol 0.001 MG/MG Topical Gel [Divigel] SBD Branded drug 5 10 View →
309002 Carbon dioxide 5 % / oxygen 95 % Gas for Inhalation SCD Clinical drug 5 10 View →
403806 Pegvisomant 10 MG Injection SCD Clinical drug 5 10 View →
403807 Pegvisomant 15 MG Injection SCD Clinical drug 5 10 View →
403808 Pegvisomant 20 MG Injection SCD Clinical drug 5 10 View →
404457 Pegvisomant 10 MG Injection [Somavert] SBD Branded drug 5 10 View →
404458 Pegvisomant 15 MG Injection [Somavert] SBD Branded drug 5 10 View →
404459 Pegvisomant 20 MG Injection [Somavert] SBD Branded drug 5 10 View →
404550 Estrogens, conjugated (USP) 0.45 MG Oral Tablet [Premarin] SBD Branded drug 5 10 View →
577040 Calcium carbonate 648 MG Oral Tablet SCD Clinical drug 5 10 View →
701305 Tretinoin 0.00025 MG/MG Topical Gel [Retin-A] SBD Branded drug 5 10 View →
727161 Menthol 80 MG/ML Topical Cream SCD Clinical drug 5 10 View →
831226 24 HR diltiazem hydrochloride 120 MG Extended Release Oral Capsule [Cartia] SBD Branded drug 5 10 View →
831255 24 HR diltiazem hydrochloride 180 MG Extended Release Oral Capsule [Cartia] SBD Branded drug 5 10 View →
860192 OnabotulinumtoxinA 100 UNT Injection SCD Clinical drug 5 10 View →
861505 Clobetasol propionate 0.5 MG/ML Topical Lotion SCD Clinical drug 5 10 View →
882548 Clindamycin phosphate 0.012 MG/MG / tretinoin 0.00025 MG/MG Topical Gel SCD Clinical drug 5 10 View →
1052684 Pramoxine hydrochloride 10 MG/ML Topical Cream SCD Clinical drug 5 9 View →
1190551 5 ML atropine sulfate 0.05 MG/ML Prefilled Syringe SCD Clinical drug 5 9 View →
1304985 Icosapent ethyl 1000 MG Oral Capsule [Vascepa] SBD Branded drug 5 9 View →
1431682 Benzalkonium chloride 0.0013 MG/MG / lidocaine hydrochloride 0.02 MG/MG Topical Gel SCD Clinical drug 5 9 View →
1435989 Chloroxylenol 2.5 MG/ML Medicated Liquid Soap SCD Clinical drug 5 9 View →
1482513 Eslicarbazepine acetate 200 MG Oral Tablet [Aptiom] SBD Branded drug 5 9 View →
1482517 Eslicarbazepine acetate 400 MG Oral Tablet [Aptiom] SBD Branded drug 5 9 View →
1482523 Eslicarbazepine acetate 600 MG Oral Tablet [Aptiom] SBD Branded drug 5 9 View →
1482527 Eslicarbazepine acetate 800 MG Oral Tablet [Aptiom] SBD Branded drug 5 9 View →
1491642 {7 (eslicarbazepine acetate 400 MG Oral Tablet) / 7 (eslicarbazepine acetate 800 MG Oral T... GPCK Generic pack 5 9 View →
1491643 {7 (eslicarbazepine acetate 400 MG Oral Tablet [Aptiom]) / 7 (eslicarbazepine acetate 800... BPCK Branded pack 5 9 View →
1541592 Menthol 0.08 MG/MG Topical Gel [Stopain] SBD Branded drug 5 9 View →
1653433 Doxycycline hyclate 50 MG Delayed Release Oral Tablet SCD Clinical drug 5 9 View →
1654721 Colloidal oatmeal 15 MG/ML Topical Cream SCD Clinical drug 5 9 View →
1658236 20 ML magnesium sulfate 500 MG/ML Injection SCD Clinical drug 5 9 View →
1741271 2.5 ML iron sucrose 20 MG/ML Injection [Venofer] SBD Branded drug 5 9 View →
1796672 5 ML protamine sulfate (USP) 10 MG/ML Injection SCD Clinical drug 5 9 View →
200317 Soybean oil 200 MG/ML Injectable Suspension SCD Clinical drug 5 9 View →
238015 Ethinyl estradiol 0.035 MG / norethindrone 0.4 MG Oral Tablet SCD Clinical drug 5 9 View →
2395783 0.5 ML dulaglutide 9 MG/ML Auto-Injector SCD Clinical drug 5 9 View →
2395785 0.5 ML dulaglutide 9 MG/ML Auto-Injector [Trulicity] SBD Branded drug 5 9 View →
251407 Salicylic acid 0.4 MG/MG Topical Ointment SCD Clinical drug 5 9 View →
2540675 Glycerin 5 MG/ML Ophthalmic Solution SCD Clinical drug 5 9 View →
2560237 {1 (acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / guaifenesin 200 MG / phen... GPCK Generic pack 5 9 View →
2636822 Sodium oxybate 4500 MG Granules for Oral Suspension SCD Clinical drug 5 9 View →
2636828 Sodium oxybate 4500 MG Granules for Oral Suspension [Lumryz] SBD Branded drug 5 9 View →
2636830 Sodium oxybate 6000 MG Granules for Oral Suspension SCD Clinical drug 5 9 View →
2636832 Sodium oxybate 6000 MG Granules for Oral Suspension [Lumryz] SBD Branded drug 5 9 View →
2636834 Sodium oxybate 7500 MG Granules for Oral Suspension SCD Clinical drug 5 9 View →
2636836 Sodium oxybate 7500 MG Granules for Oral Suspension [Lumryz] SBD Branded drug 5 9 View →
2636838 Sodium oxybate 9000 MG Granules for Oral Suspension SCD Clinical drug 5 9 View →
2636840 Sodium oxybate 9000 MG Granules for Oral Suspension [Lumryz] SBD Branded drug 5 9 View →
2698135 {7 (sodium oxybate 4500 MG Granules for Oral Suspension) / 14 (sodium oxybate 6000 MG Gran... GPCK Generic pack 5 9 View →
2698136 {7 (sodium oxybate 4500 MG Granules for Oral Suspension [Lumryz]) / 14 (sodium oxybate 600... BPCK Branded pack 5 9 View →
2735350 Weight Management 3 ML liraglutide 6 MG/ML Pen Injector SCD Clinical drug 5 9 View →
309058 Cefixime 20 MG/ML Oral Suspension SCD Clinical drug 5 9 View →
310404 Fluvastatin 20 MG Oral Capsule SCD Clinical drug 5 9 View →
419849 Cefixime 40 MG/ML Oral Suspension SCD Clinical drug 5 9 View →
583084 Glycerin 2100 MG Rectal Suppository SCD Clinical drug 5 9 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.