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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
849395 Amantadine hydrochloride 100 MG Oral Tablet SCD Clinical drug 12 20 View →
861487 Clobetasol propionate 0.5 MG/ML Topical Solution SCD Clinical drug 12 20 View →
1234456 Salicylic acid 15 MG/ML Medicated Liquid Soap SCD Clinical drug 12 19 View →
197452 Cefprozil 250 MG Oral Tablet SCD Clinical drug 12 19 View →
197661 Estrogens, conjugated (USP) 0.9 MG Oral Tablet SCD Clinical drug 12 19 View →
197662 Estrogens, conjugated (USP) 1.25 MG Oral Tablet SCD Clinical drug 12 19 View →
198102 Vitamin K1 5 MG Oral Tablet SCD Clinical drug 12 19 View →
249357 Desogestrel 0.15 MG / ethinyl estradiol 0.02 MG Oral Tablet SCD Clinical drug 12 19 View →
308512 Bacitracin 0.5 UNT/MG / polymyxin B 10 UNT/MG Topical Ointment SCD Clinical drug 12 19 View →
759743 {21 (desogestrel 0.15 MG / ethinyl estradiol 0.02 MG Oral Tablet) / 5 (ethinyl estradiol 0... GPCK Generic pack 12 19 View →
856652 Dantrolene sodium 100 MG Oral Capsule SCD Clinical drug 12 19 View →
1000141 Medroxyprogesterone acetate 5 MG Oral Tablet SCD Clinical drug 12 18 View →
1049615 Oxycodone hydrochloride 20 MG/ML Oral Solution SCD Clinical drug 12 18 View →
1299021 Ibuprofen 200 MG / pseudoephedrine hydrochloride 30 MG Oral Tablet SCD Clinical drug 12 18 View →
1657151 0.5 ML sumatriptan 12 MG/ML Auto-Injector SCD Clinical drug 12 18 View →
1663244 9 ML amiodarone hydrochloride 50 MG/ML Injection SCD Clinical drug 12 18 View →
198439 Acetaminophen 500 MG Oral Capsule SCD Clinical drug 12 18 View →
199352 Trandolapril 4 MG Oral Tablet SCD Clinical drug 12 18 View →
199353 Trandolapril 1 MG Oral Tablet SCD Clinical drug 12 18 View →
892582 Morphine sulfate 15 MG Oral Tablet SCD Clinical drug 12 18 View →
897021 12 HR dalfampridine 10 MG Extended Release Oral Tablet SCD Clinical drug 12 18 View →
977942 Oxymorphone hydrochloride 10 MG Oral Tablet SCD Clinical drug 12 18 View →
995868 Codeine phosphate 2 MG/ML / guaifenesin 20 MG/ML Oral Solution SCD Clinical drug 12 18 View →
1655959 10 ML methotrexate 25 MG/ML Injection SCD Clinical drug 12 17 View →
1655960 2 ML methotrexate 25 MG/ML Injection SCD Clinical drug 12 17 View →
1666814 1 ML midazolam 5 MG/ML Injection SCD Clinical drug 12 17 View →
1666823 2 ML midazolam 5 MG/ML Injection SCD Clinical drug 12 17 View →
238151 Mesalamine 66.7 MG/ML Enema SCD Clinical drug 12 17 View →
242462 Cilostazol 50 MG Oral Tablet SCD Clinical drug 12 17 View →
578732 Ethinyl estradiol 0.025 MG / norgestimate 0.18 MG Oral Tablet SCD Clinical drug 12 17 View →
749155 Ethinyl estradiol 0.025 MG / norgestimate 0.215 MG Oral Tablet SCD Clinical drug 12 17 View →
749156 Ethinyl estradiol 0.025 MG / norgestimate 0.25 MG Oral Tablet SCD Clinical drug 12 17 View →
749157 {7 (ethinyl estradiol 0.025 MG / norgestimate 0.18 MG Oral Tablet) / 7 (ethinyl estradiol... GPCK Generic pack 12 17 View →
991147 Methadone hydrochloride 10 MG/ML Oral Solution SCD Clinical drug 12 17 View →
1367426 12 HR naproxen sodium 220 MG / pseudoephedrine hydrochloride 120 MG Extended Release Oral... SCD Clinical drug 12 16 View →
1488045 Tretinoin 0.0008 MG/MG Topical Gel SCD Clinical drug 12 16 View →
2002717 Nilotinib 50 MG Oral Capsule SCD Clinical drug 12 16 View →
2549034 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / triprolidine hydrochloride 1.... SCD Clinical drug 12 16 View →
310796 Hydrochlorothiazide 12.5 MG / quinapril 10 MG Oral Tablet SCD Clinical drug 12 16 View →
310797 Hydrochlorothiazide 12.5 MG / quinapril 20 MG Oral Tablet SCD Clinical drug 12 16 View →
310809 Hydrochlorothiazide 25 MG / quinapril 20 MG Oral Tablet SCD Clinical drug 12 16 View →
903873 24 HR fluvoxamine maleate 100 MG Extended Release Oral Capsule SCD Clinical drug 12 16 View →
903879 24 HR fluvoxamine maleate 150 MG Extended Release Oral Capsule SCD Clinical drug 12 16 View →
905516 Chlordiazepoxide hydrochloride 5 MG Oral Capsule SCD Clinical drug 12 16 View →
1012400 Bupivacaine hydrochloride 2.5 MG/ML Injectable Solution [Marcaine] SBD Branded drug 12 15 View →
1012406 Bupivacaine hydrochloride 5 MG/ML Injectable Solution [Marcaine] SBD Branded drug 12 15 View →
1653196 3 ML insulin aspart, human 100 UNT/ML Cartridge SCD Clinical drug 12 15 View →
1724794 30 ML bupivacaine hydrochloride 7.5 MG/ML Injection [Marcaine] SBD Branded drug 12 15 View →
1724796 10 ML bupivacaine hydrochloride 7.5 MG/ML Injection [Marcaine] SBD Branded drug 12 15 View →
1725044 10 ML bupivacaine hydrochloride 5 MG/ML Injection [Marcaine] SBD Branded drug 12 15 View →
1725083 30 ML bupivacaine hydrochloride 2.5 MG/ML Injection [Marcaine] SBD Branded drug 12 15 View →
197815 Indapamide 1.25 MG Oral Tablet SCD Clinical drug 12 15 View →
1988974 24 HR pregabalin 165 MG Extended Release Oral Tablet SCD Clinical drug 12 15 View →
1988977 24 HR pregabalin 330 MG Extended Release Oral Tablet SCD Clinical drug 12 15 View →
1988980 24 HR pregabalin 82.5 MG Extended Release Oral Tablet SCD Clinical drug 12 15 View →
849385 Amantadine hydrochloride 10 MG/ML Oral Solution SCD Clinical drug 12 15 View →
1085945 Diphenhydramine hydrochloride 50 MG Oral Tablet SCD Clinical drug 12 14 View →
1092357 Rufinamide 40 MG/ML Oral Suspension SCD Clinical drug 12 14 View →
1597123 2500 MG testosterone 0.01 MG/MG Topical Gel SCD Clinical drug 12 14 View →
1737244 2 ML clindamycin 150 MG/ML Injection SCD Clinical drug 12 14 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.