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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
1923822 Deferasirox 90 MG Oral Granules SCD Clinical drug 24 24 View →
1923826 Deferasirox 360 MG Oral Granules SCD Clinical drug 24 24 View →
1923828 Deferasirox 180 MG Oral Granules SCD Clinical drug 24 24 View →
2201524 Zinc sulfate 5 MG/ML Injectable Solution SCD Clinical drug 24 24 View →
349407 Treprostinil 1 MG/ML Injectable Solution SCD Clinical drug 24 24 View →
349408 Treprostinil 10 MG/ML Injectable Solution SCD Clinical drug 24 24 View →
349409 Treprostinil 2.5 MG/ML Injectable Solution SCD Clinical drug 24 24 View →
349410 Treprostinil 5 MG/ML Injectable Solution SCD Clinical drug 24 24 View →
1731077 Fosaprepitant 150 MG Injection SCD Clinical drug 24 23 View →
996288 Benzocaine 0.2 MG/MG Oral Gel [Hurricaine] SBD Branded drug 24 23 View →
347856 Oxygen 21 % Gas for Inhalation SCD Clinical drug 23 143 View →
197502 Chlorzoxazone 500 MG Oral Tablet SCD Clinical drug 23 93 View →
897696 Hydromorphone hydrochloride 2 MG Oral Tablet SCD Clinical drug 23 72 View →
197516 Clarithromycin 250 MG Oral Tablet SCD Clinical drug 23 66 View →
1490065 Raloxifene hydrochloride 60 MG Oral Tablet SCD Clinical drug 23 59 View →
846378 24 HR levetiracetam 750 MG Extended Release Oral Tablet SCD Clinical drug 23 57 View →
351256 Eplerenone 25 MG Oral Tablet SCD Clinical drug 23 55 View →
854894 Zolpidem tartrate 6.25 MG Extended Release Oral Tablet SCD Clinical drug 23 55 View →
897649 Verapamil hydrochloride 240 MG Extended Release Oral Tablet SCD Clinical drug 23 55 View →
198316 Hydrochlorothiazide 25 MG / triamterene 37.5 MG Oral Capsule SCD Clinical drug 23 51 View →
349208 Sirolimus 1 MG Oral Tablet SCD Clinical drug 23 48 View →
617423 Amoxicillin 40 MG/ML / clavulanate 5.7 MG/ML Oral Suspension SCD Clinical drug 23 47 View →
1807915 Modified 24 HR metformin hydrochloride 500 MG Extended Release Oral Tablet SCD Clinical drug 23 46 View →
901814 Diphenhydramine hydrochloride 25 MG / ibuprofen 200 MG Oral Capsule SCD Clinical drug 23 46 View →
1737343 50 ML lidocaine hydrochloride 5 MG/ML Injection SCD Clinical drug 23 45 View →
855671 Phenytoin sodium 100 MG Extended Release Oral Capsule SCD Clinical drug 23 45 View →
897640 Verapamil hydrochloride 180 MG Extended Release Oral Tablet SCD Clinical drug 23 45 View →
905024 Risedronate sodium 35 MG Oral Tablet SCD Clinical drug 23 45 View →
1053753 Nystatin 100000 UNT/ML / triamcinolone acetonide 1 MG/ML Topical Cream SCD Clinical drug 23 44 View →
200064 Letrozole 2.5 MG Oral Tablet SCD Clinical drug 23 43 View →
903884 Fluvoxamine maleate 100 MG Oral Tablet SCD Clinical drug 23 43 View →
1737569 2 ML lidocaine hydrochloride 10 MG/ML Injection [Xylocaine] SBD Branded drug 23 42 View →
313123 Sucralfate 100 MG/ML Oral Suspension SCD Clinical drug 23 42 View →
861379 Micafungin 50 MG Injection SCD Clinical drug 23 39 View →
899557 Dexmethylphenidate hydrochloride 2.5 MG Oral Tablet SCD Clinical drug 23 39 View →
309307 Ciprofloxacin 3 MG/ML Ophthalmic Solution SCD Clinical drug 23 37 View →
1649493 Ivabradine 7.5 MG Oral Tablet SCD Clinical drug 23 36 View →
198042 Norethindrone 0.35 MG Oral Tablet SCD Clinical drug 23 36 View →
748961 {28 (norethindrone 0.35 MG Oral Tablet) } Pack GPCK Generic pack 23 36 View →
897666 Verapamil hydrochloride 120 MG Oral Tablet SCD Clinical drug 23 36 View →
1807917 Osmotic 24 HR metformin hydrochloride 500 MG Extended Release Oral Tablet SCD Clinical drug 23 35 View →
309054 Cefdinir 25 MG/ML Oral Suspension SCD Clinical drug 23 35 View →
1049604 Oxycodone hydrochloride 1 MG/ML Oral Solution SCD Clinical drug 23 34 View →
1244675 12 HR guaifenesin 1200 MG / pseudoephedrine hydrochloride 120 MG Extended Release Oral Tab... SCD Clinical drug 23 34 View →
1791859 20 ML milrinone lactate 1 MG/ML Injection SCD Clinical drug 23 32 View →
311237 Ketotifen 0.25 MG/ML Ophthalmic Solution SCD Clinical drug 23 32 View →
238014 1 ML carboprost 0.25 MG/ML Injection SCD Clinical drug 23 30 View →
2634364 {1 (acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / doxylamine succinate 6.25... GPCK Generic pack 23 30 View →
1234579 Phenylephrine hydrochloride 25 MG/ML Ophthalmic Solution SCD Clinical drug 23 29 View →
1807715 Tolnaftate 0.01 MG/MG Medicated Bar Soap SCD Clinical drug 23 29 View →
283083 Camphor 40 MG/ML / menthol 100 MG/ML / methyl salicylate 300 MG/ML Topical Cream SCD Clinical drug 23 29 View →
858747 Ursodiol 300 MG Oral Capsule SCD Clinical drug 23 28 View →
1011849 Lidocaine hydrochloride 0.005 MG/MG Topical Gel SCD Clinical drug 23 26 View →
1014638 Isopropyl alcohol 0.7 ML/ML Topical Spray SCD Clinical drug 23 26 View →
238720 10 ML tranexamic acid 100 MG/ML Injection SCD Clinical drug 23 26 View →
1010769 Lidocaine hydrochloride 20 MG/ML Topical Spray SCD Clinical drug 23 25 View →
2683421 Brompheniramine maleate 0.2 MG/ML / dextromethorphan hydrobromide 1 MG/ML Oral Solution SCD Clinical drug 23 25 View →
313408 Timolol 0.005 MG/MG Ophthalmic Gel SCD Clinical drug 23 25 View →
851748 {21 (lamotrigine 25 MG Disintegrating Oral Tablet) / 7 (lamotrigine 50 MG Disintegrating O... GPCK Generic pack 23 25 View →
851750 {7 (lamotrigine 100 MG Disintegrating Oral Tablet) / 14 (lamotrigine 25 MG Disintegrating... GPCK Generic pack 23 25 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.