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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
856535 24 HR propranolol hydrochloride 60 MG Extended Release Oral Capsule SCD Clinical drug 33 65 View →
205284 Leflunomide 10 MG Oral Tablet SCD Clinical drug 33 59 View →
198300 Tretinoin 1 MG/ML Topical Cream SCD Clinical drug 33 57 View →
317769 Theophylline 300 MG Extended Release Oral Tablet SCD Clinical drug 33 56 View →
1086772 Vilazodone hydrochloride 10 MG Oral Tablet SCD Clinical drug 33 51 View →
309113 Cephalexin 50 MG/ML Oral Suspension SCD Clinical drug 33 49 View →
1012377 Bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injectable Solution SCD Clinical drug 33 45 View →
1867596 30 ML bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injection SCD Clinical drug 33 43 View →
1043399 Capsaicin 0.00025 MG/MG Medicated Patch SCD Clinical drug 33 41 View →
1793147 Camphor 0.031 MG/MG / menthol 0.06 MG/MG / methyl salicylate 0.1 MG/MG Medicated Patch SCD Clinical drug 33 41 View →
312199 Paclitaxel 6 MG/ML Injectable Solution SCD Clinical drug 33 38 View →
1860485 4 ML docetaxel 20 MG/ML Injection SCD Clinical drug 33 34 View →
197783 Hydrocortisone 20 MG Oral Tablet SCD Clinical drug 33 33 View →
2637731 {1 (acetaminophen 21.7 MG/ML / dextromethorphan hydrobromide 0.667 MG/ML / doxylamine succ... GPCK Generic pack 33 33 View →
992475 Promethazine hydrochloride 50 MG Oral Tablet SCD Clinical drug 32 109 View →
245598 Sodium fluoride 0.0022 MG/MG Toothpaste SCD Clinical drug 32 108 View →
1094104 Phenazopyridine hydrochloride 200 MG Oral Tablet SCD Clinical drug 32 98 View →
880407 Polyethylene glycol 3350 17000 MG Powder for Oral Solution [ClearLax] SBD Branded drug 32 89 View →
310812 Hydrochlorothiazide 25 MG / triamterene 37.5 MG Oral Tablet SCD Clinical drug 32 81 View →
861495 Clobetasol propionate 0.5 MG/ML Topical Cream SCD Clinical drug 32 81 View →
854908 Bisoprolol fumarate 10 MG / hydrochlorothiazide 6.25 MG Oral Tablet SCD Clinical drug 32 80 View →
476345 Ezetimibe 10 MG / simvastatin 10 MG Oral Tablet SCD Clinical drug 32 77 View →
476349 Ezetimibe 10 MG / simvastatin 20 MG Oral Tablet SCD Clinical drug 32 77 View →
476351 Ezetimibe 10 MG / simvastatin 80 MG Oral Tablet SCD Clinical drug 32 77 View →
1606347 Metoprolol tartrate 37.5 MG Oral Tablet SCD Clinical drug 32 76 View →
1606349 Metoprolol tartrate 75 MG Oral Tablet SCD Clinical drug 32 76 View →
349479 Vardenafil 10 MG Oral Tablet SCD Clinical drug 32 64 View →
997406 12 HR fexofenadine hydrochloride 60 MG / pseudoephedrine hydrochloride 120 MG Extended Rel... SCD Clinical drug 32 63 View →
898490 Potassium citrate 15 MEQ Extended Release Oral Tablet SCD Clinical drug 32 62 View →
1739761 Brivaracetam 10 MG Oral Tablet SCD Clinical drug 32 61 View →
1356557 Perampanel 2 MG Oral Tablet SCD Clinical drug 32 60 View →
1356570 Perampanel 4 MG Oral Tablet SCD Clinical drug 32 60 View →
1356574 Perampanel 6 MG Oral Tablet SCD Clinical drug 32 60 View →
1356578 Perampanel 8 MG Oral Tablet SCD Clinical drug 32 60 View →
1356582 Perampanel 10 MG Oral Tablet SCD Clinical drug 32 60 View →
1356586 Perampanel 12 MG Oral Tablet SCD Clinical drug 32 60 View →
311666 Metoclopramide 10 MG Oral Tablet SCD Clinical drug 32 60 View →
1310525 Teriflunomide 14 MG Oral Tablet SCD Clinical drug 32 59 View →
1310533 Teriflunomide 7 MG Oral Tablet SCD Clinical drug 32 59 View →
353538 24 HR isosorbide mononitrate 60 MG Extended Release Oral Tablet SCD Clinical drug 32 59 View →
1808224 20 ML propofol 10 MG/ML Injection SCD Clinical drug 32 52 View →
762675 {21 (methylprednisolone 4 MG Oral Tablet) } Pack GPCK Generic pack 32 51 View →
1992303 12 HR timolol 5 MG/ML Ophthalmic Solution SCD Clinical drug 32 50 View →
308867 Calcitriol 0.00025 MG Oral Capsule SCD Clinical drug 32 49 View →
724861 Armodafinil 250 MG Oral Tablet SCD Clinical drug 32 46 View →
992528 Terbinafine hydrochloride 10 MG/ML Topical Cream SCD Clinical drug 32 46 View →
1046781 Acetaminophen 325 MG / chlorpheniramine maleate 2 MG / phenylephrine hydrochloride 5 MG Or... SCD Clinical drug 32 45 View →
200327 Capecitabine 150 MG Oral Tablet SCD Clinical drug 32 45 View →
106346 Mupirocin 0.02 MG/MG Topical Ointment SCD Clinical drug 32 42 View →
1648110 Bacitracin 0.5 UNT/MG Topical Ointment SCD Clinical drug 32 42 View →
1867594 10 ML bupivacaine hydrochloride 2.5 MG/ML / epinephrine 0.005 MG/ML Injection SCD Clinical drug 32 42 View →
1043014 Zinc pyrithione 5 MG/ML Medicated Shampoo SCD Clinical drug 32 41 View →
248310 Ethinyl estradiol 0.01 MG Oral Tablet SCD Clinical drug 32 40 View →
749788 {56 (varenicline 1 MG Oral Tablet) } Pack GPCK Generic pack 32 40 View →
349094 Budesonide 0.125 MG/ML Inhalation Suspension SCD Clinical drug 32 39 View →
308934 Calcium polycarbophil 625 MG Oral Tablet SCD Clinical drug 32 38 View →
1790115 10 ML doxorubicin hydrochloride liposome 2 MG/ML Injection SCD Clinical drug 32 35 View →
309710 2 ML dexmedetomidine 0.1 MG/ML Injection SCD Clinical drug 32 34 View →
1115698 Oseltamivir 6 MG/ML Oral Suspension SCD Clinical drug 32 33 View →
312069 1 ML octreotide 0.1 MG/ML Injection SCD Clinical drug 32 32 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.