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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
2619683 1000 MG estradiol 0.001 MG/MG Topical Gel SCD Clinical drug 41 46 View →
1740467 2 ML ondansetron 2 MG/ML Injection SCD Clinical drug 41 45 View →
1807516 Vancomycin 500 MG Injection SCD Clinical drug 41 43 View →
900038 Phentermine hydrochloride 30 MG Oral Capsule SCD Clinical drug 40 138 View →
856369 Trazodone hydrochloride 300 MG Oral Tablet SCD Clinical drug 40 134 View →
895664 Diphenhydramine citrate 38 MG / ibuprofen 200 MG Oral Tablet SCD Clinical drug 40 125 View →
312835 Rivastigmine 3 MG Oral Capsule SCD Clinical drug 40 124 View →
312836 Rivastigmine 6 MG Oral Capsule SCD Clinical drug 40 124 View →
314215 Rivastigmine 4.5 MG Oral Capsule SCD Clinical drug 40 124 View →
312441 Pioglitazone 45 MG Oral Tablet SCD Clinical drug 40 116 View →
197984 Minocycline 100 MG Oral Capsule SCD Clinical drug 40 115 View →
1807633 250 ML sodium chloride 9 MG/ML Injection SCD Clinical drug 40 114 View →
477372 Solifenacin succinate 10 MG Oral Tablet SCD Clinical drug 40 101 View →
903697 Liothyronine sodium 0.025 MG Oral Tablet SCD Clinical drug 40 100 View →
260218 Modafinil 100 MG Oral Tablet SCD Clinical drug 40 99 View →
834102 Penicillin V potassium 500 MG Oral Tablet SCD Clinical drug 40 97 View →
1086243 Potassium nitrate 0.05 MG/MG / sodium fluoride 0.0025 MG/MG Toothpaste SCD Clinical drug 40 95 View →
1099625 Divalproex sodium 125 MG Delayed Release Oral Tablet SCD Clinical drug 40 94 View →
1112231 Naproxen sodium 220 MG Oral Capsule SCD Clinical drug 40 94 View →
1307051 Ethanol 0.75 ML/ML Medicated Pad SCD Clinical drug 40 89 View →
197512 Ciprofloxacin 750 MG Oral Tablet SCD Clinical drug 40 89 View →
197659 Estradiol 2 MG Oral Tablet SCD Clinical drug 40 87 View →
200346 Cefdinir 300 MG Oral Capsule SCD Clinical drug 40 82 View →
885213 Benztropine mesylate 1 MG Oral Tablet SCD Clinical drug 40 81 View →
996609 24 HR memantine hydrochloride 28 MG Extended Release Oral Capsule SCD Clinical drug 40 78 View →
1494769 Sprinkle 24 HR topiramate 150 MG Extended Release Oral Capsule SCD Clinical drug 40 75 View →
1812419 Sprinkle 24 HR topiramate 200 MG Extended Release Oral Capsule SCD Clinical drug 40 75 View →
1812421 Sprinkle 24 HR topiramate 25 MG Extended Release Oral Capsule SCD Clinical drug 40 75 View →
1812425 Sprinkle 24 HR topiramate 50 MG Extended Release Oral Capsule SCD Clinical drug 40 75 View →
1812427 Sprinkle 24 HR topiramate 100 MG Extended Release Oral Capsule SCD Clinical drug 40 75 View →
432400 Cinacalcet 90 MG Oral Tablet SCD Clinical drug 40 72 View →
898350 Amlodipine 2.5 MG / benazepril hydrochloride 10 MG Oral Capsule SCD Clinical drug 40 70 View →
314055 Isosorbide dinitrate 5 MG Oral Tablet SCD Clinical drug 40 67 View →
749206 Sevelamer carbonate 800 MG Oral Tablet SCD Clinical drug 40 67 View →
197942 Methimazole 5 MG Oral Tablet SCD Clinical drug 40 65 View →
1037179 Dabigatran etexilate 75 MG Oral Capsule SCD Clinical drug 40 63 View →
307731 Adapalene 0.001 MG/MG Topical Gel SCD Clinical drug 40 59 View →
797892 Salicylic acid 20 MG/ML Medicated Pad SCD Clinical drug 40 56 View →
1923424 Sotalol hydrochloride 160 MG Oral Tablet SCD Clinical drug 40 55 View →
308459 Azithromycin 20 MG/ML Oral Suspension SCD Clinical drug 40 50 View →
312075 Ofloxacin 3 MG/ML Ophthalmic Solution SCD Clinical drug 40 50 View →
2047882 1 ML testosterone cypionate 200 MG/ML Injection SCD Clinical drug 40 48 View →
2619685 1250 MG estradiol 0.001 MG/MG Topical Gel SCD Clinical drug 40 45 View →
1361574 Heparin sodium, porcine 20000 UNT/ML Injectable Solution SCD Clinical drug 40 29 View →
1874553 24 HR desvenlafaxine succinate 100 MG Extended Release Oral Tablet SCD Clinical drug 39 123 View →
1436239 24 HR topiramate 50 MG Extended Release Oral Capsule SCD Clinical drug 39 100 View →
1437278 24 HR topiramate 25 MG Extended Release Oral Capsule SCD Clinical drug 39 100 View →
1437283 24 HR topiramate 100 MG Extended Release Oral Capsule SCD Clinical drug 39 100 View →
808751 24 HR venlafaxine 37.5 MG Extended Release Oral Tablet SCD Clinical drug 39 98 View →
854901 Bisoprolol fumarate 10 MG Oral Tablet SCD Clinical drug 39 96 View →
903703 Liothyronine sodium 0.05 MG Oral Tablet SCD Clinical drug 39 92 View →
1049635 Acetaminophen 325 MG / oxycodone hydrochloride 2.5 MG Oral Tablet SCD Clinical drug 39 90 View →
833528 Amiodarone hydrochloride 200 MG Oral Tablet SCD Clinical drug 39 83 View →
1666332 Ticagrelor 60 MG Oral Tablet SCD Clinical drug 39 82 View →
995278 Hydroxyzine pamoate 50 MG Oral Capsule SCD Clinical drug 39 82 View →
577348 Ramelteon 8 MG Oral Tablet SCD Clinical drug 39 80 View →
996594 24 HR memantine hydrochloride 14 MG Extended Release Oral Capsule SCD Clinical drug 39 77 View →
996603 24 HR memantine hydrochloride 21 MG Extended Release Oral Capsule SCD Clinical drug 39 77 View →
996615 24 HR memantine hydrochloride 7 MG Extended Release Oral Capsule SCD Clinical drug 39 77 View →
886666 Flecainide acetate 100 MG Oral Tablet SCD Clinical drug 39 74 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.