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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
1735008 20 ML fentanyl 0.05 MG/ML Injection SCD Clinical drug 11 21 View →
1794881 250 ML glucose 50 MG/ML / sodium chloride 2 MG/ML Injection SCD Clinical drug 11 21 View →
1794886 500 ML glucose 50 MG/ML / sodium chloride 2 MG/ML Injection SCD Clinical drug 11 21 View →
1794887 1000 ML glucose 50 MG/ML / sodium chloride 2 MG/ML Injection SCD Clinical drug 11 21 View →
199123 Bicalutamide 50 MG Oral Tablet SCD Clinical drug 11 21 View →
845836 Benzoyl peroxide 25 MG/ML Medicated Liquid Soap SCD Clinical drug 11 21 View →
2569283 Hydroxychloroquine sulfate 300 MG Oral Tablet SCD Clinical drug 11 20 View →
349420 Desloratadine 5 MG Oral Tablet SCD Clinical drug 11 20 View →
1088934 Chlorzoxazone 375 MG Oral Tablet SCD Clinical drug 11 19 View →
1088936 Chlorzoxazone 750 MG Oral Tablet SCD Clinical drug 11 19 View →
205301 Prednisone 5 MG/ML Oral Solution SCD Clinical drug 11 19 View →
315187 Prednisone 1 MG/ML Oral Solution SCD Clinical drug 11 19 View →
483425 Fenofibrate 130 MG Oral Capsule SCD Clinical drug 11 19 View →
1043075 Petrolatum 300 MG/ML Topical Cream SCD Clinical drug 11 18 View →
1654035 20 ML adenosine 3 MG/ML Injection SCD Clinical drug 11 18 View →
1654040 30 ML adenosine 3 MG/ML Injection SCD Clinical drug 11 18 View →
1737636 20 ML lidocaine hydrochloride 15 MG/ML Injection SCD Clinical drug 11 18 View →
905283 Trihexyphenidyl hydrochloride 5 MG Oral Tablet SCD Clinical drug 11 18 View →
103401 Hydrocortisone 0.025 MG/MG Topical Ointment SCD Clinical drug 11 17 View →
1148430 Menthol 40 MG/ML Topical Cream SCD Clinical drug 11 17 View →
1294025 Hydrocortisone acetate 25 MG/ML / pramoxine hydrochloride 10 MG/ML Rectal Cream SCD Clinical drug 11 17 View →
150840 Estrogens, conjugated (USP) 0.625 MG Oral Tablet [Premarin] SBD Branded drug 11 17 View →
1739749 5 ML brivaracetam 10 MG/ML Injection SCD Clinical drug 11 17 View →
208535 Thyroid (USP) 30 MG Oral Tablet [Armour Thyroid] SBD Branded drug 11 17 View →
241509 Allantoin 5 MG/ML Topical Cream SCD Clinical drug 11 17 View →
308689 Benzoyl peroxide 0.025 MG/MG Topical Gel SCD Clinical drug 11 17 View →
198201 Rifampin 150 MG Oral Capsule SCD Clinical drug 11 16 View →
311166 Isoniazid 100 MG Oral Tablet SCD Clinical drug 11 16 View →
311207 Ivermectin 3 MG Oral Tablet SCD Clinical drug 11 16 View →
728207 Doxycycline monohydrate 150 MG Oral Capsule SCD Clinical drug 11 16 View →
1549328 Selenium sulfide 10 MG/ML Medicated Shampoo [Head & Shoulders Clinical Strength] SBD Branded drug 11 15 View →
1649425 Doxycycline hyclate 75 MG Oral Tablet SCD Clinical drug 11 15 View →
1650446 Doxycycline hyclate 150 MG Oral Tablet SCD Clinical drug 11 15 View →
1658264 500 ML magnesium sulfate 40 MG/ML Injection SCD Clinical drug 11 15 View →
1658265 1000 ML magnesium sulfate 40 MG/ML Injection SCD Clinical drug 11 15 View →
1724885 30 ML bupivacaine hydrochloride 5 MG/ML Injection [Sensorcaine] SBD Branded drug 11 15 View →
1725177 30 ML bupivacaine hydrochloride 2.5 MG/ML Injection [Sensorcaine] SBD Branded drug 11 15 View →
197426 Acetaminophen 325 MG / butalbital 50 MG Oral Tablet SCD Clinical drug 11 15 View →
199519 Tinidazole 500 MG Oral Tablet SCD Clinical drug 11 15 View →
248420 Mesalamine 1000 MG Rectal Suppository SCD Clinical drug 11 15 View →
284207 Drospirenone 3 MG / ethinyl estradiol 0.03 MG Oral Tablet SCD Clinical drug 11 15 View →
597730 Lopinavir 200 MG / ritonavir 50 MG Oral Tablet SCD Clinical drug 11 15 View →
607018 Pregabalin 100 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607020 Pregabalin 150 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607022 Pregabalin 200 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607024 Pregabalin 225 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607026 Pregabalin 25 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607028 Pregabalin 300 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607033 Pregabalin 50 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
607038 Pregabalin 75 MG Oral Capsule [Lyrica] SBD Branded drug 11 15 View →
656809 Sodium fluoride 0.5 MG/ML Mouthwash [ACT Fluoride Rinse] SBD Branded drug 11 15 View →
746645 Lopinavir 100 MG / ritonavir 25 MG Oral Tablet SCD Clinical drug 11 15 View →
748800 {21 (drospirenone 3 MG / ethinyl estradiol 0.03 MG Oral Tablet) / 7 (inert ingredients 1 M... GPCK Generic pack 11 15 View →
897657 Hydromorphone hydrochloride 1 MG/ML Oral Solution SCD Clinical drug 11 15 View →
898718 Pregabalin 20 MG/ML Oral Solution [Lyrica] SBD Branded drug 11 15 View →
1723156 2 ML amikacin 250 MG/ML Injection SCD Clinical drug 11 14 View →
1723160 4 ML amikacin 250 MG/ML Injection SCD Clinical drug 11 14 View →
204691 Castor oil 1000 MG/ML Oral Solution SCD Clinical drug 11 14 View →
351285 Escitalopram 1 MG/ML Oral Solution SCD Clinical drug 11 14 View →
855626 Twice-Daily diclofenac epolamine 0.013 MG/MG Medicated Patch SCD Clinical drug 11 14 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.