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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
2745412 0.37 ML risankizumab-rzaa 149 MG/ML Prefilled Syringe SCD Clinical drug 10 16 View →
2745415 0.37 ML risankizumab-rzaa 149 MG/ML Prefilled Syringe [Skyrizi] SBD Branded drug 10 16 View →
416982 Menthol 12.5 MG/ML Topical Cream SCD Clinical drug 10 16 View →
542347 Isoflurane 999 MG/ML Inhalation Solution SCD Clinical drug 10 16 View →
998689 Acebutolol 200 MG Oral Capsule SCD Clinical drug 10 16 View →
1148797 12 HR tapentadol 100 MG Extended Release Oral Tablet SCD Clinical drug 10 15 View →
1148800 12 HR tapentadol 150 MG Extended Release Oral Tablet SCD Clinical drug 10 15 View →
1148803 12 HR tapentadol 200 MG Extended Release Oral Tablet SCD Clinical drug 10 15 View →
1148807 12 HR tapentadol 250 MG Extended Release Oral Tablet SCD Clinical drug 10 15 View →
1148809 12 HR tapentadol 50 MG Extended Release Oral Tablet SCD Clinical drug 10 15 View →
1246075 Pramoxine hydrochloride 10 MG/ML Topical Lotion SCD Clinical drug 10 15 View →
1251903 Ethacrynic acid 25 MG Oral Tablet SCD Clinical drug 10 15 View →
197890 Lithium carbonate 300 MG Oral Tablet SCD Clinical drug 10 15 View →
199672 Albendazole 200 MG Oral Tablet SCD Clinical drug 10 15 View →
2641644 0.1 ML adalimumab-adaz 100 MG/ML Prefilled Syringe SCD Clinical drug 10 15 View →
992454 Promethazine hydrochloride 25 MG Rectal Suppository SCD Clinical drug 10 15 View →
1299911 Tiagabine hydrochloride 2 MG Oral Tablet SCD Clinical drug 10 14 View →
1299917 Tiagabine hydrochloride 4 MG Oral Tablet SCD Clinical drug 10 14 View →
1791721 1 ML oxytocin 10 UNT/ML Injection SCD Clinical drug 10 14 View →
197730 Furosemide 10 MG/ML Oral Solution SCD Clinical drug 10 14 View →
197731 Furosemide 8 MG/ML Oral Solution SCD Clinical drug 10 14 View →
2048982 5 ML ethanol 0.99 ML/ML Injection SCD Clinical drug 10 14 View →
307730 Acyclovir 40 MG/ML Oral Suspension SCD Clinical drug 10 14 View →
749858 {21 (ethinyl estradiol 0.035 MG / norethindrone 1 MG Oral Tablet) / 7 (inert ingredients 1... GPCK Generic pack 10 14 View →
833150 {5 (milnacipran hydrochloride 12.5 MG Oral Tablet) / 8 (milnacipran hydrochloride 25 MG Or... GPCK Generic pack 10 14 View →
905341 Demeclocycline hydrochloride 150 MG Oral Tablet SCD Clinical drug 10 14 View →
905347 Demeclocycline hydrochloride 300 MG Oral Tablet SCD Clinical drug 10 14 View →
1038800 Potassium nitrate 0.05 MG/MG / sodium fluoride 0.00243 MG/MG Toothpaste SCD Clinical drug 10 13 View →
1291672 Lidocaine 0.04 MG/MG Topical Gel SCD Clinical drug 10 13 View →
1652640 3 ML insulin lispro 100 UNT/ML Pen Injector [Humalog] SBD Branded drug 10 13 View →
1653204 3 ML insulin aspart, human 100 UNT/ML Pen Injector [NovoLog] SBD Branded drug 10 13 View →
1737471 250 ML tirofiban 0.05 MG/ML Injection SCD Clinical drug 10 13 View →
1926331 0.5 UNT Doses 3 ML insulin lispro 100 UNT/ML Pen Injector SCD Clinical drug 10 13 View →
197892 Lithium carbonate 450 MG Extended Release Oral Tablet SCD Clinical drug 10 13 View →
198368 Phenobarbital 65 MG/ML Injectable Solution SCD Clinical drug 10 13 View →
204441 Famotidine 10 MG/ML Injectable Solution SCD Clinical drug 10 13 View →
238153 Acetaminophen 325 MG / butalbital 50 MG / caffeine 40 MG Oral Capsule SCD Clinical drug 10 13 View →
477234 Tinidazole 250 MG Oral Tablet SCD Clinical drug 10 13 View →
865098 Insulin lispro 100 UNT/ML Injectable Solution [Humalog] SBD Branded drug 10 13 View →
996209 Polyethylene glycol 400 10 MG/ML / tetrahydrozoline hydrochloride 0.5 MG/ML Ophthalmic Sol... SCD Clinical drug 10 13 View →
1053258 Brompheniramine maleate 0.2 MG/ML / phenylephrine hydrochloride 0.5 MG/ML Oral Solution SCD Clinical drug 10 12 View →
1724276 1 ML hydromorphone hydrochloride 2 MG/ML Injection SCD Clinical drug 10 12 View →
1791232 10 ML diltiazem hydrochloride 5 MG/ML Injection SCD Clinical drug 10 12 View →
1791233 25 ML diltiazem hydrochloride 5 MG/ML Injection SCD Clinical drug 10 12 View →
2000127 Vancomycin 25 MG/ML Oral Solution SCD Clinical drug 10 12 View →
204509 Polymyxin B 250000 UNT/ML Injectable Solution SCD Clinical drug 10 12 View →
2046528 Diphenhydramine hydrochloride 25 MG Chewable Tablet SCD Clinical drug 10 12 View →
204844 Azithromycin 600 MG Oral Tablet SCD Clinical drug 10 12 View →
207193 Methylprednisolone 62.5 MG/ML Injectable Solution [Solu-Medrol] SBD Branded drug 10 12 View →
208540 Thyroid (USP) 60 MG Oral Tablet [Armour Thyroid] SBD Branded drug 10 12 View →
2121072 Bismuth subsalicylate 262 MG Oral Capsule SCD Clinical drug 10 12 View →
2199323 2 ML methylene blue 5 MG/ML Injection SCD Clinical drug 10 12 View →
2399907 100 ML vasopressin (USP) 0.4 UNT/ML Injection SCD Clinical drug 10 12 View →
251020 Sennosides, USP 15 MG Chewable Tablet SCD Clinical drug 10 12 View →
2541170 50 ML midazolam 1 MG/ML Injection SCD Clinical drug 10 12 View →
2541171 100 ML midazolam 1 MG/ML Injection SCD Clinical drug 10 12 View →
2680300 Acetaminophen 32.5 MG/ML / dextromethorphan hydrobromide 1 MG/ML / guaifenesin 20 MG/ML Or... SCD Clinical drug 10 12 View →
313996 Gentamicin 40 MG/ML Injectable Solution SCD Clinical drug 10 12 View →
808917 Fosfomycin 3000 MG Granules for Oral Solution SCD Clinical drug 10 12 View →
856940 Acetaminophen 21.7 MG/ML / hydrocodone bitartrate 0.5 MG/ML Oral Solution SCD Clinical drug 10 12 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.