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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
2717264 Nicotine 4 MG Chewing Gum [Habitrol] SBD Branded drug 3 9 View →
2717557 Nicotine 2 MG Chewing Gum [Habitrol] SBD Branded drug 3 9 View →
348544 Nitrogen 60 % / oxygen 40 % Gas for Inhalation SCD Clinical drug 3 9 View →
351427 24 HR nicotine 0.583 MG/HR Transdermal System [Nicoderm C-Q] SBD Branded drug 3 9 View →
351429 24 HR nicotine 0.875 MG/HR Transdermal System [Nicoderm C-Q] SBD Branded drug 3 9 View →
351433 24 HR nicotine 0.292 MG/HR Transdermal System [Nicoderm C-Q] SBD Branded drug 3 9 View →
427538 Clobazam 5 MG Oral Tablet SCD Clinical drug 3 9 View →
617302 Amoxicillin 25 MG/ML / clavulanate 6.25 MG/ML Oral Suspension SCD Clinical drug 3 9 View →
637168 Zinc oxide 0.128 MG/MG Topical Ointment SCD Clinical drug 3 9 View →
790267 24 HR desvenlafaxine succinate 100 MG Extended Release Oral Tablet [Pristiq] SBD Branded drug 3 9 View →
790290 24 HR desvenlafaxine succinate 50 MG Extended Release Oral Tablet [Pristiq] SBD Branded drug 3 9 View →
834350 Amiodarone hydrochloride 400 MG Oral Tablet [Pacerone] SBD Branded drug 3 9 View →
852920 Quinidine gluconate 324 MG Extended Release Oral Tablet SCD Clinical drug 3 9 View →
855474 Alclometasone dipropionate 0.5 MG/ML Topical Cream SCD Clinical drug 3 9 View →
979094 Hydroxychloroquine sulfate 200 MG Oral Tablet [Plaquenil] SBD Branded drug 3 9 View →
1020021 Cetirizine hydrochloride 1 MG/ML Oral Solution [Zyrtec] SBD Branded drug 3 8 View →
1085773 Triamcinolone acetonide 1 MG/ML Topical Cream [Triderm] SBD Branded drug 3 8 View →
1245946 Selenium sulfide 6 MG/ML Medicated Shampoo SCD Clinical drug 3 8 View →
1486977 Dapagliflozin 10 MG Oral Tablet [Farxiga] SBD Branded drug 3 8 View →
1489934 Methenamine 162 MG / sodium salicylate 162.5 MG Oral Tablet [Cystex] SBD Branded drug 3 8 View →
1648997 Triamcinolone acetonide 0.25 MG/ML Topical Cream [Triderm] SBD Branded drug 3 8 View →
1648999 Triamcinolone acetonide 5 MG/ML Topical Cream [Triderm] SBD Branded drug 3 8 View →
197449 Cefaclor 500 MG Oral Capsule SCD Clinical drug 3 8 View →
205290 Efavirenz 200 MG Oral Capsule SCD Clinical drug 3 8 View →
205291 Efavirenz 100 MG Oral Capsule SCD Clinical drug 3 8 View →
205292 Efavirenz 50 MG Oral Capsule SCD Clinical drug 3 8 View →
2099681 0.5 ML testosterone enanthate 200 MG/ML Auto-Injector SCD Clinical drug 3 8 View →
2099686 0.5 ML testosterone enanthate 200 MG/ML Auto-Injector [Xyosted] SBD Branded drug 3 8 View →
2099689 0.5 ML testosterone enanthate 100 MG/ML Auto-Injector SCD Clinical drug 3 8 View →
2099691 0.5 ML testosterone enanthate 100 MG/ML Auto-Injector [Xyosted] SBD Branded drug 3 8 View →
2099695 0.5 ML testosterone enanthate 150 MG/ML Auto-Injector SCD Clinical drug 3 8 View →
2099697 0.5 ML testosterone enanthate 150 MG/ML Auto-Injector [Xyosted] SBD Branded drug 3 8 View →
211915 Bismuth subsalicylate 35 MG/ML Oral Suspension [Pepto-bismol] SBD Branded drug 3 8 View →
2548540 Doxylamine succinate 25 MG Oral Tablet [Zzzquil Ultra] SBD Branded drug 3 8 View →
668538 Pyrantel pamoate 720.5 MG Chewable Tablet SCD Clinical drug 3 8 View →
1000064 Doxepin 150 MG Oral Capsule SCD Clinical drug 3 7 View →
1041495 Bimatoprost 0.3 MG/ML Topical Solution SCD Clinical drug 3 7 View →
1049908 Diphenhydramine hydrochloride 2.5 MG/ML Oral Solution [Benadryl] SBD Branded drug 3 7 View →
1052526 Ethanol 0.64 ML/ML Topical Gel SCD Clinical drug 3 7 View →
1193293 Acetaminophen 325 MG / chlorpheniramine maleate 4 MG / phenylephrine hydrochloride 10 MG O... SCD Clinical drug 3 7 View →
1298830 Acetaminophen 325 MG Oral Tablet [Pharbetol] SBD Branded drug 3 7 View →
1300797 24 HR mirabegron 25 MG Extended Release Oral Tablet [Myrbetriq] SBD Branded drug 3 7 View →
1300803 24 HR mirabegron 50 MG Extended Release Oral Tablet [Myrbetriq] SBD Branded drug 3 7 View →
1358510 Methylprednisolone acetate 20 MG/ML Injectable Suspension SCD Clinical drug 3 7 View →
1358512 Methylprednisolone acetate 20 MG/ML Injectable Suspension [Depo-Medrol] SBD Branded drug 3 7 View →
1359027 {21 (ethinyl estradiol 0.03 MG / norethindrone acetate 1.5 MG Oral Tablet) / 7 (ferrous fu... BPCK Branded pack 3 7 View →
1437707 Brimonidine 0.0033 MG/MG Topical Gel SCD Clinical drug 3 7 View →
1606490 Asenapine 2.5 MG Sublingual Tablet [Saphris] SBD Branded drug 3 7 View →
1653049 Calcium carbonate 1177 MG Chewable Tablet [Tums] SBD Branded drug 3 7 View →
1654079 0.5 ML ustekinumab 90 MG/ML Injection [Stelara] SBD Branded drug 3 7 View →
1656395 Belimumab 120 MG Injection SCD Clinical drug 3 7 View →
1656398 Belimumab 120 MG Injection [Benlysta] SBD Branded drug 3 7 View →
1656400 Belimumab 400 MG Injection SCD Clinical drug 3 7 View →
1656402 Belimumab 400 MG Injection [Benlysta] SBD Branded drug 3 7 View →
1720601 Mepolizumab 100 MG Injection SCD Clinical drug 3 7 View →
1720606 Mepolizumab 100 MG Injection [Nucala] SBD Branded drug 3 7 View →
1811257 26 ML ustekinumab 5 MG/ML Injection [Stelara] SBD Branded drug 3 7 View →
1939296 1 ML belimumab 200 MG/ML Auto-Injector SCD Clinical drug 3 7 View →
1939299 1 ML belimumab 200 MG/ML Auto-Injector [Benlysta] SBD Branded drug 3 7 View →
1939346 1 ML belimumab 200 MG/ML Prefilled Syringe SCD Clinical drug 3 7 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.