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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
1665057 2 ML verapamil hydrochloride 2.5 MG/ML Injection SCD Clinical drug 43 61 View →
197303 Acetazolamide 125 MG Oral Tablet SCD Clinical drug 43 56 View →
1665046 Ceftriaxone 2000 MG Injection SCD Clinical drug 43 51 View →
204642 Selenium sulfide 10 MG/ML Medicated Shampoo SCD Clinical drug 43 50 View →
901541 24 HR pramipexole dihydrochloride 0.375 MG Extended Release Oral Tablet SCD Clinical drug 43 50 View →
901546 24 HR pramipexole dihydrochloride 0.75 MG Extended Release Oral Tablet SCD Clinical drug 43 50 View →
204442 Ibuprofen 40 MG/ML Oral Suspension SCD Clinical drug 43 49 View →
2634564 {1 (acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / phenylephrine hydrochlori... GPCK Generic pack 43 49 View →
1193360 100 ML levetiracetam 15 MG/ML Injection SCD Clinical drug 43 43 View →
803353 Phentermine hydrochloride 37.5 MG Oral Tablet SCD Clinical drug 42 178 View →
1013659 24 HR minocycline 105 MG Extended Release Oral Tablet SCD Clinical drug 42 163 View →
349556 Ezetimibe 10 MG Oral Tablet SCD Clinical drug 42 127 View →
198046 Nortriptyline 50 MG Oral Capsule SCD Clinical drug 42 126 View →
314214 Rivastigmine 1.5 MG Oral Capsule SCD Clinical drug 42 126 View →
997501 Fexofenadine hydrochloride 60 MG Oral Tablet SCD Clinical drug 42 107 View →
1488569 Dapagliflozin 10 MG Oral Tablet SCD Clinical drug 42 89 View →
1488574 Dapagliflozin 5 MG Oral Tablet SCD Clinical drug 42 89 View →
1483744 Naltrexone hydrochloride 50 MG Oral Tablet SCD Clinical drug 42 88 View →
1795609 100 ML glucose 50 MG/ML Injection SCD Clinical drug 42 80 View →
1795616 50 ML glucose 50 MG/ML Injection SCD Clinical drug 42 80 View →
199381 Potassium citrate 10 MEQ Extended Release Oral Tablet SCD Clinical drug 42 72 View →
197941 Methimazole 10 MG Oral Tablet SCD Clinical drug 42 67 View →
403879 Imatinib 400 MG Oral Tablet SCD Clinical drug 42 66 View →
1037045 Dabigatran etexilate 150 MG Oral Capsule SCD Clinical drug 42 65 View →
1607784 Deferasirox 180 MG Oral Tablet SCD Clinical drug 42 63 View →
1607796 Deferasirox 90 MG Oral Tablet SCD Clinical drug 42 63 View →
1049154 12 HR pseudoephedrine hydrochloride 120 MG Extended Release Oral Tablet SCD Clinical drug 42 58 View →
198520 Caffeine 200 MG Oral Tablet SCD Clinical drug 42 54 View →
197304 Acetazolamide 250 MG Oral Tablet SCD Clinical drug 42 53 View →
1490026 Droxidopa 100 MG Oral Capsule SCD Clinical drug 42 51 View →
1490034 Droxidopa 200 MG Oral Capsule SCD Clinical drug 42 51 View →
1490038 Droxidopa 300 MG Oral Capsule SCD Clinical drug 42 51 View →
1807513 Vancomycin 1000 MG Injection SCD Clinical drug 42 44 View →
705934 Tolnaftate 0.01 MG/MG Powder Spray SCD Clinical drug 42 44 View →
857700 Diclofenac sodium 15 MG/ML Topical Solution SCD Clinical drug 42 42 View →
1013665 24 HR minocycline 80 MG Extended Release Oral Tablet SCD Clinical drug 41 162 View →
858062 24 HR minocycline 115 MG Extended Release Oral Tablet SCD Clinical drug 41 162 View →
858372 24 HR minocycline 65 MG Extended Release Oral Tablet SCD Clinical drug 41 162 View →
629699 24 HR minocycline 90 MG Extended Release Oral Tablet SCD Clinical drug 41 158 View →
1038799 Benzalkonium chloride 1 MG/ML Topical Foam SCD Clinical drug 41 127 View →
834241 Febuxostat 80 MG Oral Tablet SCD Clinical drug 41 117 View →
197904 Lovastatin 20 MG Oral Tablet SCD Clinical drug 41 115 View →
855942 Diclofenac potassium 50 MG Oral Tablet SCD Clinical drug 41 114 View →
313222 Terbinafine 250 MG Oral Tablet SCD Clinical drug 41 113 View →
311892 Nabumetone 500 MG Oral Tablet SCD Clinical drug 41 109 View →
198150 Primidone 50 MG Oral Tablet SCD Clinical drug 41 102 View →
402698 24 HR felodipine 2.5 MG Extended Release Oral Tablet SCD Clinical drug 41 100 View →
402696 24 HR felodipine 5 MG Extended Release Oral Tablet SCD Clinical drug 41 99 View →
1734347 100 ML ropivacaine hydrochloride 2 MG/ML Injection SCD Clinical drug 41 69 View →
308964 Captopril 50 MG Oral Tablet SCD Clinical drug 41 67 View →
198370 Torsemide 100 MG Oral Tablet SCD Clinical drug 41 64 View →
198278 Thyroid (USP) 180 MG Oral Tablet SCD Clinical drug 41 56 View →
1736776 10 ML oxaliplatin 5 MG/ML Injection SCD Clinical drug 41 49 View →
1736781 20 ML oxaliplatin 5 MG/ML Injection SCD Clinical drug 41 49 View →
1812194 1 ML dexamethasone phosphate 4 MG/ML Injection SCD Clinical drug 41 49 View →
835840 Testosterone cypionate 200 MG/ML Injectable Solution SCD Clinical drug 41 49 View →
317152 Salicylic acid 20 MG/ML Topical Cream SCD Clinical drug 41 48 View →
2619677 250 MG estradiol 0.001 MG/MG Topical Gel SCD Clinical drug 41 46 View →
2619679 500 MG estradiol 0.001 MG/MG Topical Gel SCD Clinical drug 41 46 View →
2619681 750 MG estradiol 0.001 MG/MG Topical Gel SCD Clinical drug 41 46 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.