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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
198378 Tacrolimus 5 MG Oral Capsule SCD Clinical drug 66 89 View →
1724787 10 ML bupivacaine hydrochloride 7.5 MG/ML Injection SCD Clinical drug 66 84 View →
749289 {11 (varenicline 0.5 MG Oral Tablet) / 42 (varenicline 1 MG Oral Tablet) } Pack GPCK Generic pack 66 81 View →
1362831 Heparin sodium, porcine 10000 UNT/ML Injectable Solution SCD Clinical drug 66 66 View →
312087 Ondansetron 8 MG Disintegrating Oral Tablet SCD Clinical drug 65 215 View →
996571 Memantine hydrochloride 5 MG Oral Tablet SCD Clinical drug 65 166 View →
1812011 Osmotic 24 HR nifedipine 30 MG Extended Release Oral Tablet SCD Clinical drug 65 158 View →
309112 Cephalexin 250 MG Oral Capsule SCD Clinical drug 65 156 View →
314267 Thyroid (USP) 15 MG Oral Tablet SCD Clinical drug 65 96 View →
200345 Simvastatin 80 MG Oral Tablet SCD Clinical drug 64 216 View →
197770 Hydrochlorothiazide 50 MG Oral Tablet SCD Clinical drug 64 211 View →
1648755 Nitrofurantoin, macrocrystals 25 MG / nitrofurantoin, monohydrate 75 MG Oral Capsule SCD Clinical drug 64 171 View →
1648759 Nitrofurantoin, macrocrystals 100 MG Oral Capsule SCD Clinical drug 64 146 View →
1737757 2 ML lidocaine hydrochloride 20 MG/ML Injection SCD Clinical drug 64 120 View →
1298324 12 HR dextromethorphan hydrobromide 30 MG / guaifenesin 600 MG Extended Release Oral Table... SCD Clinical drug 64 118 View →
313776 Ziprasidone 40 MG Oral Capsule SCD Clinical drug 64 116 View →
1543069 Lidocaine 0.05 MG/MG Topical Ointment SCD Clinical drug 64 98 View →
1719291 4 ML furosemide 10 MG/ML Injection SCD Clinical drug 64 94 View →
197580 Dexamethasone 1.5 MG Oral Tablet SCD Clinical drug 64 81 View →
1425407 Ethanol 0.72 ML/ML Topical Spray SCD Clinical drug 64 65 View →
104894 Ondansetron 4 MG Disintegrating Oral Tablet SCD Clinical drug 63 215 View →
282755 Telmisartan 20 MG Oral Tablet SCD Clinical drug 63 199 View →
308047 Alprazolam 0.25 MG Oral Tablet SCD Clinical drug 63 194 View →
198241 Temazepam 15 MG Oral Capsule SCD Clinical drug 63 185 View →
200094 Irbesartan 75 MG Oral Tablet SCD Clinical drug 63 176 View →
1049683 Oxycodone hydrochloride 10 MG Oral Tablet SCD Clinical drug 63 169 View →
485465 Eszopiclone 3 MG Oral Tablet SCD Clinical drug 63 167 View →
309362 Clopidogrel 75 MG Oral Tablet SCD Clinical drug 63 164 View →
1812013 Osmotic 24 HR nifedipine 60 MG Extended Release Oral Tablet SCD Clinical drug 63 153 View →
199378 12 HR carbamazepine 100 MG Extended Release Oral Tablet SCD Clinical drug 63 131 View →
1421893 Lidocaine 40 MG/ML Topical Cream SCD Clinical drug 63 96 View →
103968 Lamotrigine 100 MG Disintegrating Oral Tablet SCD Clinical drug 63 86 View →
198430 Lamotrigine 25 MG Disintegrating Oral Tablet SCD Clinical drug 63 86 View →
252478 Lamotrigine 50 MG Disintegrating Oral Tablet SCD Clinical drug 63 86 View →
252479 Lamotrigine 200 MG Disintegrating Oral Tablet SCD Clinical drug 63 86 View →
251577 Salicylic acid 20 MG/ML Topical Solution SCD Clinical drug 63 81 View →
672567 24 HR paliperidone 3 MG Extended Release Oral Tablet SCD Clinical drug 63 81 View →
672569 24 HR paliperidone 6 MG Extended Release Oral Tablet SCD Clinical drug 63 81 View →
1116572 Acetaminophen 32.5 MG/ML / dextromethorphan hydrobromide 1 MG/ML / guaifenesin 20 MG/ML /... SCD Clinical drug 63 71 View →
899461 24 HR dexmethylphenidate hydrochloride 15 MG Extended Release Oral Capsule SCD Clinical drug 63 71 View →
899495 24 HR dexmethylphenidate hydrochloride 30 MG Extended Release Oral Capsule SCD Clinical drug 63 71 View →
1232651 Phenylephrine hydrochloride 10 MG/ML Injectable Solution SCD Clinical drug 63 70 View →
1010895 Lidocaine hydrochloride 40 MG/ML Topical Cream SCD Clinical drug 63 65 View →
835603 Tramadol hydrochloride 50 MG Oral Tablet SCD Clinical drug 62 368 View →
284215 Clindamycin 300 MG Oral Capsule SCD Clinical drug 62 221 View →
863669 Tamsulosin hydrochloride 0.4 MG Oral Capsule SCD Clinical drug 62 200 View →
283672 Citalopram 10 MG Oral Tablet SCD Clinical drug 62 182 View →
577033 Sildenafil 20 MG Oral Tablet SCD Clinical drug 62 179 View →
485442 Eszopiclone 2 MG Oral Tablet SCD Clinical drug 62 174 View →
197444 Carbidopa 25 MG / levodopa 100 MG Oral Tablet SCD Clinical drug 62 155 View →
313209 Temozolomide 20 MG Oral Capsule SCD Clinical drug 62 144 View →
313211 Temozolomide 5 MG Oral Capsule SCD Clinical drug 62 144 View →
317160 Temozolomide 100 MG Oral Capsule SCD Clinical drug 62 144 View →
700883 Temozolomide 140 MG Oral Capsule SCD Clinical drug 62 144 View →
700885 Temozolomide 180 MG Oral Capsule SCD Clinical drug 62 144 View →
313210 Temozolomide 250 MG Oral Capsule SCD Clinical drug 62 143 View →
1099870 Divalproex sodium 500 MG Delayed Release Oral Tablet SCD Clinical drug 62 142 View →
853201 24 HR quetiapine 50 MG Extended Release Oral Tablet SCD Clinical drug 62 103 View →
898342 Amlodipine 10 MG / benazepril hydrochloride 20 MG Oral Capsule SCD Clinical drug 62 100 View →
1734475 30 ML ropivacaine hydrochloride 5 MG/ML Injection SCD Clinical drug 62 98 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.