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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
1086778 Vilazodone hydrochloride 20 MG Oral Tablet SCD Clinical drug 35 53 View →
1738805 24 HR paroxetine hydrochloride 25 MG Extended Release Oral Tablet SCD Clinical drug 35 52 View →
200328 Capecitabine 500 MG Oral Tablet SCD Clinical drug 35 48 View →
351264 Buprenorphine 2 MG Sublingual Tablet SCD Clinical drug 35 47 View →
1665005 Ceftriaxone 500 MG Injection SCD Clinical drug 35 46 View →
351109 Budesonide 0.25 MG/ML Inhalation Suspension SCD Clinical drug 35 42 View →
1730194 5 ML cisatracurium 2 MG/ML Injection SCD Clinical drug 35 39 View →
1362712 Mexiletine hydrochloride 200 MG Oral Capsule SCD Clinical drug 35 38 View →
1362720 Mexiletine hydrochloride 250 MG Oral Capsule SCD Clinical drug 35 38 View →
617954 Calamine 80 MG/ML / zinc oxide 80 MG/ML Topical Lotion SCD Clinical drug 35 36 View →
312022 Nitrous oxide 99 % Gas for Inhalation SCD Clinical drug 34 253 View →
199903 Hydrochlorothiazide 12.5 MG Oral Capsule SCD Clinical drug 34 112 View →
861448 Clobetasol propionate 0.0005 MG/MG Topical Ointment SCD Clinical drug 34 92 View →
197541 Colchicine 0.6 MG Oral Tablet SCD Clinical drug 34 90 View →
854916 Bisoprolol fumarate 2.5 MG / hydrochlorothiazide 6.25 MG Oral Tablet SCD Clinical drug 34 88 View →
314209 Rizatriptan 10 MG Oral Tablet SCD Clinical drug 34 87 View →
96304 Primidone 250 MG Oral Tablet SCD Clinical drug 34 81 View →
476350 Ezetimibe 10 MG / simvastatin 40 MG Oral Tablet SCD Clinical drug 34 79 View →
891881 Morphine sulfate 15 MG Extended Release Oral Tablet SCD Clinical drug 34 74 View →
891888 Morphine sulfate 30 MG Extended Release Oral Tablet SCD Clinical drug 34 74 View →
577776 Candesartan cilexetil 16 MG Oral Tablet SCD Clinical drug 34 70 View →
200311 Fenofibrate 67 MG Oral Capsule SCD Clinical drug 34 69 View →
310288 Fenofibrate 134 MG Oral Capsule SCD Clinical drug 34 69 View →
856460 24 HR propranolol hydrochloride 120 MG Extended Release Oral Capsule SCD Clinical drug 34 64 View →
1734355 200 ML ropivacaine hydrochloride 2 MG/ML Injection SCD Clinical drug 34 62 View →
617430 Amoxicillin 80 MG/ML / clavulanate 11.4 MG/ML Oral Suspension SCD Clinical drug 34 61 View →
198857 Simethicone 66.7 MG/ML Oral Suspension SCD Clinical drug 34 60 View →
199390 Etodolac 500 MG Oral Tablet SCD Clinical drug 34 60 View →
794639 Lubiprostone 0.008 MG Oral Capsule SCD Clinical drug 34 58 View →
1738803 24 HR paroxetine hydrochloride 12.5 MG Extended Release Oral Tablet SCD Clinical drug 34 51 View →
1738807 24 HR paroxetine hydrochloride 37.5 MG Extended Release Oral Tablet SCD Clinical drug 34 51 View →
309333 Clindamycin 10 MG/ML Topical Solution SCD Clinical drug 34 50 View →
142034 Benzoyl peroxide 100 MG/ML Medicated Liquid Soap SCD Clinical drug 34 49 View →
1304979 Icosapent ethyl 1000 MG Oral Capsule SCD Clinical drug 34 47 View →
485020 Mycophenolic acid 180 MG Delayed Release Oral Tablet SCD Clinical drug 34 47 View →
197746 Guanfacine 2 MG Oral Tablet SCD Clinical drug 34 46 View →
311723 Minoxidil 20 MG/ML Topical Solution SCD Clinical drug 34 45 View →
1114479 24 HR pramipexole dihydrochloride 2.25 MG Extended Release Oral Tablet SCD Clinical drug 34 41 View →
199212 20 ML cisatracurium 10 MG/ML Injection SCD Clinical drug 34 38 View →
1790127 25 ML doxorubicin hydrochloride liposome 2 MG/ML Injection SCD Clinical drug 34 37 View →
1542919 Sodium bicarbonate 700 MG / sodium chloride 2300 MG Powder for Nasal Solution SCD Clinical drug 34 36 View →
1432969 168 HR buprenorphine 0.015 MG/HR Transdermal System SCD Clinical drug 34 34 View →
198776 Phenol 14 MG/ML Mucosal Spray SCD Clinical drug 34 34 View →
2107345 Prucalopride 1 MG Oral Tablet SCD Clinical drug 34 34 View →
2107353 Prucalopride 2 MG Oral Tablet SCD Clinical drug 34 34 View →
904870 168 HR buprenorphine 0.01 MG/HR Transdermal System SCD Clinical drug 34 34 View →
904876 168 HR buprenorphine 0.02 MG/HR Transdermal System SCD Clinical drug 34 34 View →
904880 168 HR buprenorphine 0.005 MG/HR Transdermal System SCD Clinical drug 34 34 View →
992438 Promethazine hydrochloride 12.5 MG Oral Tablet SCD Clinical drug 33 124 View →
849431 Naproxen sodium 550 MG Oral Tablet SCD Clinical drug 33 119 View →
197903 Lovastatin 10 MG Oral Tablet SCD Clinical drug 33 100 View →
2059015 Rivaroxaban 2.5 MG Oral Tablet SCD Clinical drug 33 97 View →
197817 Indomethacin 25 MG Oral Capsule SCD Clinical drug 33 92 View →
616763 Ethanol 0.62 ML/ML Topical Foam SCD Clinical drug 33 92 View →
833709 24 HR tramadol hydrochloride 100 MG Extended Release Oral Tablet SCD Clinical drug 33 76 View →
1593058 24 HR dapagliflozin 10 MG / metformin hydrochloride 1000 MG Extended Release Oral Tablet SCD Clinical drug 33 74 View →
1593070 24 HR dapagliflozin 5 MG / metformin hydrochloride 1000 MG Extended Release Oral Tablet SCD Clinical drug 33 74 View →
349434 Voriconazole 200 MG Oral Tablet SCD Clinical drug 33 71 View →
898723 Benazepril hydrochloride 5 MG Oral Tablet SCD Clinical drug 33 70 View →
308192 Amoxicillin 500 MG Oral Tablet SCD Clinical drug 33 65 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.