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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
197805 Ibuprofen 400 MG Oral Tablet SCD Clinical drug 139 501 View →
416784 Stannous fluoride 0.00454 MG/MG Toothpaste SCD Clinical drug 139 313 View →
310433 Gabapentin 600 MG Oral Tablet SCD Clinical drug 138 430 View →
830837 24 HR diltiazem hydrochloride 240 MG Extended Release Oral Capsule SCD Clinical drug 138 393 View →
866412 24 HR metoprolol succinate 100 MG Extended Release Oral Tablet SCD Clinical drug 138 341 View →
1043619 Eucalyptol 0.92 MG/ML / menthol 0.42 MG/ML / methyl salicylate 0.6 MG/ML / thymol 0.64 MG/... SCD Clinical drug 138 285 View →
1110988 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / guaifenesin 200 MG / phenylep... SCD Clinical drug 138 160 View →
854834 Lisdexamfetamine dimesylate 30 MG Oral Capsule SCD Clinical drug 137 139 View →
854830 Lisdexamfetamine dimesylate 20 MG Oral Capsule SCD Clinical drug 136 138 View →
854842 Lisdexamfetamine dimesylate 70 MG Oral Capsule SCD Clinical drug 136 138 View →
854850 Lisdexamfetamine dimesylate 50 MG Oral Capsule SCD Clinical drug 136 138 View →
854838 Lisdexamfetamine dimesylate 40 MG Oral Capsule SCD Clinical drug 136 137 View →
854846 Lisdexamfetamine dimesylate 60 MG Oral Capsule SCD Clinical drug 136 137 View →
856834 Amitriptyline hydrochloride 25 MG Oral Tablet SCD Clinical drug 135 306 View →
1115005 Docusate sodium 100 MG Oral Capsule SCD Clinical drug 135 243 View →
1092189 Acetaminophen 500 MG / diphenhydramine hydrochloride 25 MG Oral Tablet SCD Clinical drug 135 237 View →
197392 Baclofen 20 MG Oral Tablet SCD Clinical drug 134 401 View →
310434 Gabapentin 800 MG Oral Tablet SCD Clinical drug 134 400 View →
757707 Tadalafil 2.5 MG Oral Tablet SCD Clinical drug 134 330 View →
861010 Metformin hydrochloride 850 MG Oral Tablet SCD Clinical drug 133 477 View →
1000070 Doxepin 25 MG Oral Capsule SCD Clinical drug 133 243 View →
1049906 Diphenhydramine hydrochloride 2.5 MG/ML Oral Solution SCD Clinical drug 133 174 View →
828348 Cyclobenzaprine hydrochloride 10 MG Oral Tablet SCD Clinical drug 132 556 View →
979485 Losartan potassium 25 MG Oral Tablet SCD Clinical drug 132 347 View →
1000048 Doxepin 10 MG Oral Capsule SCD Clinical drug 132 230 View →
308892 Calcium carbonate 1000 MG Chewable Tablet SCD Clinical drug 132 179 View →
866090 Buspirone hydrochloride 30 MG Oral Tablet SCD Clinical drug 131 360 View →
1094549 Acetaminophen 325 MG / dextromethorphan hydrobromide 15 MG / doxylamine succinate 6.25 MG... SCD Clinical drug 130 161 View →
197943 Methocarbamol 500 MG Oral Tablet SCD Clinical drug 128 431 View →
197361 Amlodipine 5 MG Oral Tablet SCD Clinical drug 128 361 View →
866427 24 HR metoprolol succinate 25 MG Extended Release Oral Tablet SCD Clinical drug 128 321 View →
866514 Metoprolol tartrate 50 MG Oral Tablet SCD Clinical drug 127 349 View →
904467 Pravastatin sodium 20 MG Oral Tablet SCD Clinical drug 127 248 View →
1049909 Diphenhydramine hydrochloride 25 MG Oral Capsule SCD Clinical drug 127 245 View →
856845 Amitriptyline hydrochloride 50 MG Oral Tablet SCD Clinical drug 126 287 View →
582753 Ethanol 0.7 ML/ML Topical Solution SCD Clinical drug 126 214 View →
309309 Ciprofloxacin 500 MG Oral Tablet SCD Clinical drug 125 400 View →
402014 Omeprazole 20 MG Delayed Release Oral Tablet SCD Clinical drug 124 293 View →
1000076 Doxepin 50 MG Oral Capsule SCD Clinical drug 124 213 View →
198030 24 HR nicotine 0.875 MG/HR Transdermal System SCD Clinical drug 124 178 View →
312938 Sertraline 100 MG Oral Tablet SCD Clinical drug 123 400 View →
1148399 8 HR acetaminophen 650 MG Extended Release Oral Tablet SCD Clinical drug 123 264 View →
904475 Pravastatin sodium 40 MG Oral Tablet SCD Clinical drug 123 237 View →
995258 Hydroxyzine hydrochloride 25 MG Oral Tablet SCD Clinical drug 122 344 View →
979480 Losartan potassium 100 MG Oral Tablet SCD Clinical drug 122 320 View →
1235247 Lurasidone hydrochloride 20 MG Oral Tablet SCD Clinical drug 122 314 View →
198427 Lamotrigine 100 MG Oral Tablet SCD Clinical drug 122 309 View →
636522 12 HR guaifenesin 600 MG Extended Release Oral Tablet SCD Clinical drug 122 220 View →
541892 Amphetamine aspartate 2.5 MG / amphetamine sulfate 2.5 MG / dextroamphetamine saccharate 2... SCD Clinical drug 122 189 View →
309367 Clotrimazole 10 MG/ML Topical Cream SCD Clinical drug 122 171 View →
312941 Sertraline 50 MG Oral Tablet SCD Clinical drug 121 376 View →
541363 Amphetamine aspartate 7.5 MG / amphetamine sulfate 7.5 MG / dextroamphetamine saccharate 7... SCD Clinical drug 121 184 View →
310385 Fluoxetine 20 MG Oral Capsule SCD Clinical drug 120 354 View →
577961 Amphetamine aspartate 5 MG / amphetamine sulfate 5 MG / dextroamphetamine saccharate 5 MG... SCD Clinical drug 120 179 View →
240559 Salicylic acid 0.4 MG/MG Medicated Patch SCD Clinical drug 120 128 View →
1040031 Lurasidone hydrochloride 40 MG Oral Tablet SCD Clinical drug 119 312 View →
282401 Lamotrigine 25 MG Oral Tablet SCD Clinical drug 119 302 View →
541878 Amphetamine aspartate 1.25 MG / amphetamine sulfate 1.25 MG / dextroamphetamine saccharate... SCD Clinical drug 119 178 View →
1431235 Lurasidone hydrochloride 60 MG Oral Tablet SCD Clinical drug 118 310 View →
1020138 Dextromethorphan hydrobromide 1 MG/ML / guaifenesin 20 MG/ML Oral Solution SCD Clinical drug 118 136 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.