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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
1044949 Dextromethorphan hydrobromide 2 MG/ML / guaifenesin 20 MG/ML / phenylephrine hydrochloride... SCD Clinical drug 27 28 View →
1803932 Leucovorin 100 MG Injection SCD Clinical drug 27 27 View →
1806177 50/50 Release 24 HR methylphenidate hydrochloride 20 MG Extended Release Oral Capsule SCD Clinical drug 27 27 View →
1806179 50/50 Release 24 HR methylphenidate hydrochloride 30 MG Extended Release Oral Capsule SCD Clinical drug 27 27 View →
1806183 50/50 Release 24 HR methylphenidate hydrochloride 40 MG Extended Release Oral Capsule SCD Clinical drug 27 27 View →
884655 Amphetamine sulfate 5 MG Oral Tablet SCD Clinical drug 27 27 View →
896209 60 ACTUAT fluticasone propionate 0.25 MG/ACTUAT / salmeterol 0.05 MG/ACTUAT Dry Powder Inh... SCD Clinical drug 27 27 View →
992765 Miconazole nitrate 200 MG Vaginal Insert SCD Clinical drug 27 27 View →
700408 Doxycycline monohydrate 75 MG Oral Capsule SCD Clinical drug 26 85 View →
897702 Hydromorphone hydrochloride 4 MG Oral Tablet SCD Clinical drug 26 85 View →
310818 Hydrochlorothiazide 50 MG / triamterene 75 MG Oral Tablet SCD Clinical drug 26 79 View →
1232082 Rivaroxaban 15 MG Oral Tablet SCD Clinical drug 26 73 View →
855189 24 HR tolterodine tartrate 4 MG Extended Release Oral Capsule SCD Clinical drug 26 64 View →
433798 24 HR alprazolam 0.5 MG Extended Release Oral Tablet SCD Clinical drug 26 63 View →
205316 Topiramate 15 MG Oral Capsule SCD Clinical drug 26 60 View →
198034 24 HR nifedipine 30 MG Extended Release Oral Tablet SCD Clinical drug 26 59 View →
2204565 Pectin 11.5 MG Oral Lozenge SCD Clinical drug 26 59 View →
809477 Silodosin 8 MG Oral Capsule SCD Clinical drug 26 56 View →
826612 Silodosin 4 MG Oral Capsule SCD Clinical drug 26 54 View →
485436 Entecavir 1 MG Oral Tablet SCD Clinical drug 26 53 View →
1652673 Doxycycline monohydrate 50 MG Oral Tablet SCD Clinical drug 26 51 View →
313797 Amoxicillin 25 MG/ML Oral Suspension SCD Clinical drug 26 51 View →
1357541 Tofacitinib 5 MG Oral Tablet SCD Clinical drug 26 47 View →
2048566 Tofacitinib 10 MG Oral Tablet SCD Clinical drug 26 47 View →
309098 Cefuroxime 500 MG Oral Tablet SCD Clinical drug 26 46 View →
562251 Amoxicillin 250 MG / clavulanate 125 MG Oral Tablet SCD Clinical drug 26 45 View →
1922765 Atrial Fibrillation sotalol hydrochloride 80 MG Oral Tablet SCD Clinical drug 26 43 View →
899518 Dexmethylphenidate hydrochloride 5 MG Oral Tablet SCD Clinical drug 26 43 View →
856481 24 HR propranolol hydrochloride 160 MG Extended Release Oral Capsule SCD Clinical drug 26 42 View →
899548 Dexmethylphenidate hydrochloride 10 MG Oral Tablet SCD Clinical drug 26 42 View →
1536840 Aspirin 325 MG / chlorpheniramine maleate 2 MG / phenylephrine bitartrate 7.8 MG Effervesc... SCD Clinical drug 26 40 View →
308696 Benzoyl peroxide 50 MG/ML Medicated Liquid Soap SCD Clinical drug 26 39 View →
476576 Cefdinir 50 MG/ML Oral Suspension SCD Clinical drug 26 38 View →
861960 Armodafinil 200 MG Oral Tablet SCD Clinical drug 26 38 View →
197536 Clozapine 25 MG Oral Tablet SCD Clinical drug 26 37 View →
1807894 Osmotic 24 HR metformin hydrochloride 1000 MG Extended Release Oral Tablet SCD Clinical drug 26 36 View →
860107 Ketorolac tromethamine 5 MG/ML Ophthalmic Solution SCD Clinical drug 26 36 View →
904589 Sotalol hydrochloride 240 MG Oral Tablet SCD Clinical drug 26 35 View →
1726319 2 ML irinotecan hydrochloride 20 MG/ML Injection SCD Clinical drug 26 34 View →
2691548 Tolnaftate 10 MG/ML / undecylenic acid 250 MG/ML Topical Solution SCD Clinical drug 26 34 View →
309092 Ceftriaxone 250 MG Injection SCD Clinical drug 26 34 View →
1659263 1 ML heparin sodium, porcine 5000 UNT/ML Injection SCD Clinical drug 26 33 View →
664981 Lanolin 0.155 MG/MG / petrolatum 0.534 MG/MG Topical Ointment SCD Clinical drug 26 33 View →
1432465 Calcium carbonate 1177 MG Chewable Tablet SCD Clinical drug 26 32 View →
824586 Psyllium 3400 MG Powder for Oral Suspension SCD Clinical drug 26 32 View →
1725059 Naloxone hydrochloride 40 MG/ML Nasal Spray SCD Clinical drug 26 31 View →
1918042 Abiraterone acetate 500 MG Oral Tablet SCD Clinical drug 26 31 View →
349198 Clonazepam 0.5 MG Disintegrating Oral Tablet SCD Clinical drug 26 31 View →
1665088 Cefepime 2000 MG Injection SCD Clinical drug 26 29 View →
1665093 Cefepime 1000 MG Injection SCD Clinical drug 26 29 View →
2637726 {1 (acetaminophen 21.7 MG/ML / dextromethorphan hydrobromide 0.667 MG/ML / phenylephrine h... GPCK Generic pack 26 29 View →
283504 Ondansetron 2 MG/ML Injectable Solution SCD Clinical drug 26 29 View →
1546881 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / doxylamine succinate 6.25 MG... SCD Clinical drug 26 27 View →
1654006 10 ML etomidate 2 MG/ML Injection SCD Clinical drug 26 27 View →
1863605 1000 ML glucose 50 MG/ML / potassium chloride 0.02 MEQ/ML / sodium chloride 4.5 MG/ML Inje... SCD Clinical drug 26 27 View →
2049888 Vancomycin 1250 MG Injection SCD Clinical drug 26 27 View →
615099 1000 ML glucose 50 MG/ML / potassium chloride 0.03 MEQ/ML / sodium chloride 4.5 MG/ML Inje... SCD Clinical drug 26 27 View →
615100 1000 ML glucose 50 MG/ML / potassium chloride 0.04 MEQ/ML / sodium chloride 4.5 MG/ML Inje... SCD Clinical drug 26 27 View →
630796 1000 ML glucose 50 MG/ML / potassium chloride 0.01 MEQ/ML / sodium chloride 4.5 MG/ML Inje... SCD Clinical drug 26 27 View →
1307056 Buprenorphine 4 MG / naloxone 1 MG Sublingual Film SCD Clinical drug 26 26 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.