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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
1871459 Lisdexamfetamine dimesylate 40 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1871461 Lisdexamfetamine dimesylate 30 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1871463 Lisdexamfetamine dimesylate 20 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1871465 Lisdexamfetamine dimesylate 10 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1871467 Lisdexamfetamine dimesylate 60 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1871469 Lisdexamfetamine dimesylate 50 MG Chewable Tablet [Vyvanse] SBD Branded drug 13 13 View →
1941461 Chloroxylenol 1 MG/ML Medicated Liquid Soap SCD Clinical drug 13 13 View →
2047591 1 ML epoetin alfa-epbx 10000 UNT/ML Injection SCD Clinical drug 13 13 View →
2047596 1 ML epoetin alfa-epbx 10000 UNT/ML Injection [Retacrit] SBD Branded drug 13 13 View →
2047600 1 ML epoetin alfa-epbx 2000 UNT/ML Injection SCD Clinical drug 13 13 View →
2047602 1 ML epoetin alfa-epbx 2000 UNT/ML Injection [Retacrit] SBD Branded drug 13 13 View →
2047606 1 ML epoetin alfa-epbx 3000 UNT/ML Injection SCD Clinical drug 13 13 View →
2047608 1 ML epoetin alfa-epbx 3000 UNT/ML Injection [Retacrit] SBD Branded drug 13 13 View →
2047612 1 ML epoetin alfa-epbx 4000 UNT/ML Injection SCD Clinical drug 13 13 View →
2047614 1 ML epoetin alfa-epbx 4000 UNT/ML Injection [Retacrit] SBD Branded drug 13 13 View →
2055036 Leucovorin 500 MG Injection SCD Clinical drug 13 13 View →
207362 Minocycline 50 MG Oral Tablet SCD Clinical drug 13 13 View →
2178079 Tiopronin 300 MG Delayed Release Oral Tablet SCD Clinical drug 13 13 View →
241834 Cyclosporine, modified 100 MG Oral Capsule SCD Clinical drug 13 13 View →
2463731 Epoetin alfa-epbx 10000 UNT/ML Injectable Solution SCD Clinical drug 13 13 View →
2463733 Epoetin alfa-epbx 10000 UNT/ML Injectable Solution [Retacrit] SBD Branded drug 13 13 View →
2463735 Epoetin alfa-epbx 20000 UNT/ML Injectable Solution SCD Clinical drug 13 13 View →
2463737 Epoetin alfa-epbx 20000 UNT/ML Injectable Solution [Retacrit] SBD Branded drug 13 13 View →
2475337 250 ML norepinephrine 0.016 MG/ML Injection SCD Clinical drug 13 13 View →
2475340 250 ML norepinephrine 0.032 MG/ML Injection SCD Clinical drug 13 13 View →
250820 Vigabatrin 500 MG Powder for Oral Solution SCD Clinical drug 13 13 View →
2619579 250 ML norepinephrine 0.064 MG/ML Injection SCD Clinical drug 13 13 View →
2630753 Cefazolin 3000 MG Injection SCD Clinical drug 13 13 View →
308693 Benzoyl peroxide 50 MG/ML Topical Cream SCD Clinical drug 13 13 View →
309012 Carmustine 100 MG Injection SCD Clinical drug 13 13 View →
310497 Glucagon (rDNA) 1 MG Injection SCD Clinical drug 13 13 View →
465377 30 ML acetylcysteine 200 MG/ML Injection SCD Clinical drug 13 13 View →
828700 1.2 ML plerixafor 20 MG/ML Injection SCD Clinical drug 13 13 View →
835894 Cyclosporine, modified 25 MG Oral Capsule SCD Clinical drug 13 13 View →
854832 Lisdexamfetamine dimesylate 20 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
854836 Lisdexamfetamine dimesylate 30 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
854840 Lisdexamfetamine dimesylate 40 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
854844 Lisdexamfetamine dimesylate 70 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
854848 Lisdexamfetamine dimesylate 60 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
854852 Lisdexamfetamine dimesylate 50 MG Oral Capsule [Vyvanse] SBD Branded drug 13 13 View →
348624 Nitrogen 99.2 % Gas for Inhalation SCD Clinical drug 12 157 View →
310693 Helium 99 % Gas for Inhalation SCD Clinical drug 12 78 View →
1988311 24 HR diltiazem hydrochloride 180 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 12 60 View →
1988316 24 HR diltiazem hydrochloride 240 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 12 60 View →
1988319 24 HR diltiazem hydrochloride 300 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 12 60 View →
1988324 24 HR diltiazem hydrochloride 360 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 12 60 View →
1988330 24 HR diltiazem hydrochloride 420 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 12 60 View →
1807552 1000 ML sodium chloride 4.5 MG/ML Injection SCD Clinical drug 12 46 View →
2179635 Tramadol hydrochloride 100 MG Oral Tablet SCD Clinical drug 12 46 View →
849398 Naproxen sodium 275 MG Oral Tablet SCD Clinical drug 12 41 View →
1650030 Doxycycline monohydrate 5 MG/ML Oral Suspension SCD Clinical drug 12 40 View →
966158 Levothyroxine sodium 0.025 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966171 Levothyroxine sodium 0.075 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966185 Levothyroxine sodium 0.112 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966191 Levothyroxine sodium 0.125 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966201 Levothyroxine sodium 0.15 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966205 Levothyroxine sodium 0.175 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966218 Levothyroxine sodium 0.3 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966247 Levothyroxine sodium 0.05 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 View →
966250 Levothyroxine sodium 0.1 MG Oral Tablet [Synthroid] SBD Branded drug 12 39 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.