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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
351260 Lansoprazole 30 MG Disintegrating Oral Tablet SCD Clinical drug 19 22 View →
1743707 Methylprednisolone 125 MG Injection [Solu-Medrol] SBD Branded drug 19 21 View →
855818 Prasugrel 5 MG Oral Tablet SCD Clinical drug 19 21 View →
1094126 Phenazopyridine hydrochloride 95 MG Oral Tablet SCD Clinical drug 19 20 View →
1719000 Gemcitabine 200 MG Injection SCD Clinical drug 19 20 View →
1719003 Gemcitabine 1000 MG Injection SCD Clinical drug 19 20 View →
707251 Sodium chloride 6.5 MG/ML Nasal Spray SCD Clinical drug 19 20 View →
1048903 Salicylic acid 20 MG/ML Topical Spray SCD Clinical drug 19 19 View →
198324 Trifluoperazine 2 MG Oral Tablet SCD Clinical drug 19 19 View →
198325 Trifluoperazine 5 MG Oral Tablet SCD Clinical drug 19 19 View →
200133 12 HR carbamazepine 200 MG Extended Release Oral Capsule SCD Clinical drug 19 19 View →
248389 Sodium fluoride 27.2 MG/ML Oral Foam SCD Clinical drug 19 19 View →
307718 Acetylcysteine 100 MG/ML Inhalation Solution SCD Clinical drug 19 19 View →
308072 Aluminum hydroxide 160 MG / magnesium carbonate 105 MG Chewable Tablet SCD Clinical drug 19 19 View →
310169 Estradiol 0.1 MG/ML Vaginal Cream SCD Clinical drug 19 19 View →
859437 Vecuronium bromide 1 MG/ML Injectable Solution SCD Clinical drug 19 19 View →
861370 Sevelamer carbonate 2400 MG Powder for Oral Suspension SCD Clinical drug 19 19 View →
105071 Nicotine 4 MG Chewing Gum [Nicorette] SBD Branded drug 18 66 View →
359500 24 HR etodolac 500 MG Extended Release Oral Tablet SCD Clinical drug 18 59 View →
312839 Rizatriptan 5 MG Disintegrating Oral Tablet SCD Clinical drug 18 56 View →
1926450 Benzalkonium chloride 0.001 MG/MG Medicated Bar Soap SCD Clinical drug 18 52 View →
1652674 Doxycycline hyclate 50 MG Oral Tablet SCD Clinical drug 18 51 View →
2667489 Calcium carbonate 200 MG Oral Lozenge SCD Clinical drug 18 51 View →
1423080 Doxycycline hyclate 200 MG Delayed Release Oral Tablet SCD Clinical drug 18 49 View →
835593 Imipramine hydrochloride 10 MG Oral Tablet SCD Clinical drug 18 47 View →
1734479 100 ML ropivacaine hydrochloride 5 MG/ML Injection SCD Clinical drug 18 44 View →
835568 Imipramine hydrochloride 50 MG Oral Tablet SCD Clinical drug 18 43 View →
1098134 24 HR niacin 1000 MG Extended Release Oral Tablet SCD Clinical drug 18 42 View →
1098141 24 HR niacin 500 MG Extended Release Oral Tablet SCD Clinical drug 18 42 View →
1099596 Divalproex sodium 125 MG Delayed Release Oral Capsule SCD Clinical drug 18 42 View →
313761 Zaleplon 10 MG Oral Capsule SCD Clinical drug 18 42 View →
403888 Microencapsulated potassium chloride 15 MEQ Extended Release Oral Tablet SCD Clinical drug 18 42 View →
103456 Fluocinonide 0.5 MG/ML Topical Cream SCD Clinical drug 18 41 View →
857169 Fosinopril sodium 10 MG Oral Tablet SCD Clinical drug 18 39 View →
1085633 Triamcinolone acetonide 0.00025 MG/MG Topical Ointment SCD Clinical drug 18 38 View →
197465 Clorazepate dipotassium 3.75 MG Oral Tablet SCD Clinical drug 18 38 View →
309078 Cefpodoxime 200 MG Oral Tablet SCD Clinical drug 18 38 View →
311347 Linezolid 600 MG Oral Tablet SCD Clinical drug 18 38 View →
359229 Azathioprine 75 MG Oral Tablet SCD Clinical drug 18 38 View →
1046982 Hyoscyamine sulfate 0.125 MG Sublingual Tablet SCD Clinical drug 18 36 View →
857187 Fosinopril sodium 40 MG Oral Tablet SCD Clinical drug 18 36 View →
1242399 12 HR loratadine 5 MG / pseudoephedrine sulfate 120 MG Extended Release Oral Tablet SCD Clinical drug 18 34 View →
413257 Chloroxylenol 10 MG/ML Medicated Liquid Soap SCD Clinical drug 18 34 View →
577324 Paricalcitol 0.004 MG Oral Capsule SCD Clinical drug 18 33 View →
1085640 Triamcinolone acetonide 0.005 MG/MG Topical Ointment SCD Clinical drug 18 32 View →
2663901 0.2 ML adalimumab-atto 100 MG/ML Prefilled Syringe SCD Clinical drug 18 30 View →
2663904 0.2 ML adalimumab-atto 100 MG/ML Prefilled Syringe [Amjevita] SBD Branded drug 18 30 View →
2663906 0.4 ML adalimumab-atto 100 MG/ML Prefilled Syringe SCD Clinical drug 18 30 View →
2663907 0.4 ML adalimumab-atto 100 MG/ML Prefilled Syringe [Amjevita] SBD Branded drug 18 30 View →
2663908 0.4 ML adalimumab-atto 100 MG/ML Auto-Injector SCD Clinical drug 18 30 View →
2663910 0.4 ML adalimumab-atto 100 MG/ML Auto-Injector [Amjevita] SBD Branded drug 18 30 View →
2663914 0.8 ML adalimumab-atto 100 MG/ML Auto-Injector SCD Clinical drug 18 30 View →
2663915 0.8 ML adalimumab-atto 100 MG/ML Auto-Injector [Amjevita] SBD Branded drug 18 30 View →
283406 Mirtazapine 15 MG Disintegrating Oral Tablet SCD Clinical drug 18 30 View →
406396 Ethinyl estradiol 0.035 MG / norgestimate 0.18 MG Oral Tablet SCD Clinical drug 18 30 View →
687424 Ethinyl estradiol 0.035 MG / norgestimate 0.215 MG Oral Tablet SCD Clinical drug 18 30 View →
749784 {7 (ethinyl estradiol 0.035 MG / norgestimate 0.18 MG Oral Tablet) / 7 (ethinyl estradiol... GPCK Generic pack 18 30 View →
1000126 1 ML medroxyprogesterone acetate 150 MG/ML Injection SCD Clinical drug 18 29 View →
284008 Travoprost 0.04 MG/ML Ophthalmic Solution SCD Clinical drug 18 29 View →
197939 Methazolamide 25 MG Oral Tablet SCD Clinical drug 18 28 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.