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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
977909 12 HR oxymorphone hydrochloride 30 MG Extended Release Oral Tablet SCD Clinical drug 14 56 View →
977915 12 HR oxymorphone hydrochloride 40 MG Extended Release Oral Tablet SCD Clinical drug 14 56 View →
977923 12 HR oxymorphone hydrochloride 5 MG Extended Release Oral Tablet SCD Clinical drug 14 56 View →
977929 12 HR oxymorphone hydrochloride 7.5 MG Extended Release Oral Tablet SCD Clinical drug 14 56 View →
1807551 500 ML sodium chloride 4.5 MG/ML Injection SCD Clinical drug 14 47 View →
763183 {48 (prednisone 10 MG Oral Tablet) } Pack GPCK Generic pack 14 41 View →
808955 Menthol 0.035 MG/MG Topical Gel SCD Clinical drug 14 40 View →
904419 Alendronic acid 10 MG Oral Tablet SCD Clinical drug 14 39 View →
1724439 Thyroid (USP) 30 MG Oral Tablet [NP Thyroid] SBD Branded drug 14 37 View →
2709603 Sitagliptin phosphate 100 MG Oral Tablet SCD Clinical drug 14 36 View →
637173 Cephalexin 750 MG Oral Capsule SCD Clinical drug 14 36 View →
1364445 Apixaban 5 MG Oral Tablet SCD Clinical drug 14 35 View →
866479 Hydrochlorothiazide 25 MG / metoprolol tartrate 100 MG Oral Tablet SCD Clinical drug 14 35 View →
866482 Hydrochlorothiazide 25 MG / metoprolol tartrate 50 MG Oral Tablet SCD Clinical drug 14 35 View →
1807548 50 ML sodium chloride 4.5 MG/ML Injection SCD Clinical drug 14 34 View →
284201 Zolmitriptan 2.5 MG Disintegrating Oral Tablet SCD Clinical drug 14 34 View →
351134 Zolmitriptan 5 MG Disintegrating Oral Tablet SCD Clinical drug 14 34 View →
855194 Tolterodine tartrate 2 MG Oral Tablet SCD Clinical drug 14 34 View →
1798474 Sodium fluoride 0.2 MG/ML Mouthwash [Listerine] SBD Branded drug 14 33 View →
197574 Desoximetasone 2.5 MG/ML Topical Cream SCD Clinical drug 14 32 View →
1010763 Epinephrine 0.01 MG/ML / lidocaine hydrochloride 20 MG/ML Injectable Solution [Xylocaine w... SBD Branded drug 14 31 View →
313571 Vancomycin 250 MG Oral Capsule SCD Clinical drug 14 31 View →
1356563 Perampanel 2 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1356572 Perampanel 4 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1356576 Perampanel 6 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1356580 Perampanel 8 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1356584 Perampanel 10 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1356588 Perampanel 12 MG Oral Tablet [FYCOMPA] SBD Branded drug 14 30 View →
1790126 Perampanel 0.5 MG/ML Oral Suspension [FYCOMPA] SBD Branded drug 14 30 View →
310155 Erythromycin 250 MG Delayed Release Oral Tablet SCD Clinical drug 14 29 View →
310157 Erythromycin 500 MG Delayed Release Oral Tablet SCD Clinical drug 14 29 View →
857702 Diclofenac potassium 25 MG Oral Tablet SCD Clinical drug 14 29 View →
313570 Vancomycin 125 MG Oral Capsule SCD Clinical drug 14 26 View →
884707 Estradiol 0.01 MG Vaginal Insert SCD Clinical drug 14 25 View →
1043307 Benzalkonium chloride 1.33 MG/ML Medicated Pad SCD Clinical drug 14 24 View →
1741270 2.5 ML iron sucrose 20 MG/ML Injection SCD Clinical drug 14 24 View →
2627719 0.8 ML adalimumab-atto 50 MG/ML Auto-Injector SCD Clinical drug 14 23 View →
2627722 0.8 ML adalimumab-atto 50 MG/ML Auto-Injector [Amjevita] SBD Branded drug 14 23 View →
603103 Naproxen 375 MG Delayed Release Oral Tablet SCD Clinical drug 14 23 View →
1006801 Clozapine 150 MG Disintegrating Oral Tablet SCD Clinical drug 14 22 View →
1442137 Macitentan 10 MG Oral Tablet SCD Clinical drug 14 22 View →
1726844 0.4 ML adalimumab 100 MG/ML Prefilled Syringe SCD Clinical drug 14 22 View →
1726846 0.4 ML adalimumab 100 MG/ML Prefilled Syringe [Humira] SBD Branded drug 14 22 View →
1872979 0.4 ML adalimumab 100 MG/ML Auto-Injector SCD Clinical drug 14 22 View →
1872980 0.4 ML adalimumab 100 MG/ML Auto-Injector [Humira] SBD Branded drug 14 22 View →
1921009 0.1 ML adalimumab 100 MG/ML Prefilled Syringe SCD Clinical drug 14 22 View →
1921010 0.1 ML adalimumab 100 MG/ML Prefilled Syringe [Humira] SBD Branded drug 14 22 View →
1921016 0.2 ML adalimumab 100 MG/ML Prefilled Syringe SCD Clinical drug 14 22 View →
1921017 0.2 ML adalimumab 100 MG/ML Prefilled Syringe [Humira] SBD Branded drug 14 22 View →
1921238 0.8 ML adalimumab 100 MG/ML Auto-Injector SCD Clinical drug 14 22 View →
1921240 0.8 ML adalimumab 100 MG/ML Auto-Injector [Humira] SBD Branded drug 14 22 View →
197660 Estrogens, conjugated (USP) 0.3 MG Oral Tablet SCD Clinical drug 14 22 View →
199351 Trandolapril 2 MG Oral Tablet SCD Clinical drug 14 22 View →
476179 Clozapine 25 MG Disintegrating Oral Tablet SCD Clinical drug 14 22 View →
996921 Clozapine 200 MG Disintegrating Oral Tablet SCD Clinical drug 14 22 View →
1425847 Dextroamphetamine sulfate 2.5 MG Oral Tablet SCD Clinical drug 14 21 View →
1425854 Dextroamphetamine sulfate 7.5 MG Oral Tablet SCD Clinical drug 14 21 View →
2102949 Prochlorperazine 5 MG/ML Injectable Solution SCD Clinical drug 14 21 View →
2123194 Pulmonary Hypertension tadalafil 20 MG Oral Tablet SCD Clinical drug 14 21 View →
259249 Menthol 0.1 MG/MG Topical Gel SCD Clinical drug 14 21 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.