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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
864718 Methadone hydrochloride 5 MG Oral Tablet SCD Clinical drug 16 26 View →
1595624 Lidocaine hydrochloride 40 MG/ML / menthol 10 MG/ML Topical Cream SCD Clinical drug 16 25 View →
429212 Clozapine 50 MG Oral Tablet SCD Clinical drug 16 25 View →
1995300 Menthol 20 MG Oral Lozenge SCD Clinical drug 16 24 View →
312033 Ethinyl estradiol 0.035 MG / norethindrone 1 MG Oral Tablet SCD Clinical drug 16 24 View →
476177 Clozapine 100 MG Disintegrating Oral Tablet SCD Clinical drug 16 24 View →
1376336 Prednisolone acetate 10 MG/ML Ophthalmic Suspension SCD Clinical drug 16 23 View →
1658637 1 ML heparin sodium, porcine 10000 UNT/ML Injection SCD Clinical drug 16 23 View →
240707 Desogestrel 0.15 MG / ethinyl estradiol 0.03 MG Oral Tablet SCD Clinical drug 16 23 View →
310364 Fluocinonide 0.5 MG/ML Topical Solution SCD Clinical drug 16 23 View →
358917 Benzoyl peroxide 0.05 MG/MG / clindamycin 0.01 MG/MG Topical Gel SCD Clinical drug 16 23 View →
686429 Mesalamine 1200 MG Delayed Release Oral Tablet SCD Clinical drug 16 23 View →
1006610 24 HR dexmethylphenidate hydrochloride 40 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
1101928 24 HR dexmethylphenidate hydrochloride 25 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
1101934 24 HR dexmethylphenidate hydrochloride 35 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
1489073 Menthol 105 MG/ML Topical Spray SCD Clinical drug 16 22 View →
1791701 10 ML fluorouracil 50 MG/ML Injection SCD Clinical drug 16 22 View →
310437 Galantamine 8 MG Oral Tablet SCD Clinical drug 16 22 View →
351136 Albuterol 0.417 MG/ML Inhalation Solution SCD Clinical drug 16 22 View →
351137 Albuterol 0.21 MG/ML Inhalation Solution SCD Clinical drug 16 22 View →
897722 Verapamil hydrochloride 40 MG Oral Tablet SCD Clinical drug 16 22 View →
899441 24 HR dexmethylphenidate hydrochloride 10 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
899463 24 HR dexmethylphenidate hydrochloride 15 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
899487 24 HR dexmethylphenidate hydrochloride 20 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
899497 24 HR dexmethylphenidate hydrochloride 30 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
899513 24 HR dexmethylphenidate hydrochloride 5 MG Extended Release Oral Capsule [Focalin] SBD Branded drug 16 22 View →
900575 Ritonavir 100 MG Oral Tablet SCD Clinical drug 16 22 View →
1291085 Hydrocortisone acetate 30 MG Rectal Suppository SCD Clinical drug 16 21 View →
313134 Sulfamethoxazole 40 MG/ML / trimethoprim 8 MG/ML Oral Suspension SCD Clinical drug 16 21 View →
200009 Benzoyl peroxide 25 MG/ML Topical Lotion SCD Clinical drug 16 20 View →
311915 Naproxen 500 MG Delayed Release Oral Tablet SCD Clinical drug 16 20 View →
825130 24 HR mesalamine 375 MG Extended Release Oral Capsule SCD Clinical drug 16 20 View →
889520 Acetaminophen 300 MG / butalbital 50 MG / caffeine 40 MG Oral Capsule SCD Clinical drug 16 20 View →
1670195 10 ML fosphenytoin sodium 75 MG/ML Injection SCD Clinical drug 16 19 View →
2047877 Benzalkonium chloride 1.3 MG/ML / lidocaine hydrochloride 40 MG/ML Topical Spray SCD Clinical drug 16 19 View →
252559 Budesonide 0.5 MG/ML Inhalation Suspension SCD Clinical drug 16 19 View →
311670 2 ML metoclopramide 5 MG/ML Injection SCD Clinical drug 16 19 View →
105018 Lamotrigine 100 MG Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
105019 Lamotrigine 25 MG Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
108782 Lamotrigine 200 MG Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
1297761 Esomeprazole 5 MG Granules for Oral Suspension SCD Clinical drug 16 18 View →
1357886 Methylprednisolone 2000 MG Injection SCD Clinical drug 16 18 View →
1537948 Minoxidil 50 MG/ML Topical Spray SCD Clinical drug 16 18 View →
1870207 NDA019430 0.3 ML epinephrine 1 MG/ML Auto-Injector SCD Clinical drug 16 18 View →
201239 Lamotrigine 5 MG Tablet for Oral Suspension [Lamictal] SBD Branded drug 16 18 View →
201240 Lamotrigine 25 MG Tablet for Oral Suspension [Lamictal] SBD Branded drug 16 18 View →
206201 Lamotrigine 150 MG Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
207191 Methylprednisolone 40 MG Injection [Solu-Medrol] SBD Branded drug 16 18 View →
313518 Trolamine salicylate 100 MG/ML Topical Cream SCD Clinical drug 16 18 View →
349010 Lamotrigine 2 MG Tablet for Oral Suspension SCD Clinical drug 16 18 View →
542426 Lamotrigine 2 MG Tablet for Oral Suspension [Lamictal] SBD Branded drug 16 18 View →
795772 {35 (lamotrigine 25 MG Oral Tablet [Lamictal]) } Pack [Lamictal Blue (For Patients Taking... BPCK Branded pack 16 18 View →
795774 {7 (lamotrigine 100 MG Oral Tablet [Lamictal]) / 42 (lamotrigine 25 MG Oral Tablet [Lamict... BPCK Branded pack 16 18 View →
795778 {14 (lamotrigine 100 MG Oral Tablet [Lamictal]) / 84 (lamotrigine 25 MG Oral Tablet [Lamic... BPCK Branded pack 16 18 View →
849049 Lamotrigine 100 MG Disintegrating Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
849050 Lamotrigine 200 MG Disintegrating Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
849051 Lamotrigine 25 MG Disintegrating Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
849052 Lamotrigine 50 MG Disintegrating Oral Tablet [Lamictal] SBD Branded drug 16 18 View →
851749 {21 (lamotrigine 25 MG Disintegrating Oral Tablet [Lamictal]) / 7 (lamotrigine 50 MG Disin... BPCK Branded pack 16 18 View →
851751 {7 (lamotrigine 100 MG Disintegrating Oral Tablet [Lamictal]) / 14 (lamotrigine 25 MG Disi... BPCK Branded pack 16 18 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.