Home › NDC Lookup › RxCUI directory

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
856457 Propranolol hydrochloride 20 MG Oral Tablet SCD Clinical drug 82 218 View →
855288 Warfarin sodium 1 MG Oral Tablet SCD Clinical drug 82 211 View →
311725 Mirtazapine 15 MG Oral Tablet SCD Clinical drug 82 203 View →
197499 Chlorthalidone 25 MG Oral Tablet SCD Clinical drug 82 180 View →
900156 24 HR lamotrigine 200 MG Extended Release Oral Tablet SCD Clinical drug 82 150 View →
1014314 Triamcinolone acetonide 1 MG/ML Topical Cream SCD Clinical drug 82 138 View →
308460 Azithromycin 250 MG Oral Tablet SCD Clinical drug 82 137 View →
636676 Varenicline 1 MG Oral Tablet SCD Clinical drug 82 98 View →
198012 Naproxen 375 MG Oral Tablet SCD Clinical drug 81 274 View →
197311 Acyclovir 400 MG Oral Tablet SCD Clinical drug 81 268 View →
606730 Esomeprazole 40 MG Delayed Release Oral Capsule SCD Clinical drug 81 235 View →
904481 Pravastatin sodium 80 MG Oral Tablet SCD Clinical drug 81 179 View →
248656 Azithromycin 500 MG Oral Tablet SCD Clinical drug 81 163 View →
312137 Oxcarbazepine 300 MG Oral Tablet SCD Clinical drug 81 161 View →
197418 Bumetanide 1 MG Oral Tablet SCD Clinical drug 81 155 View →
1737761 5 ML lidocaine hydrochloride 20 MG/ML Injection SCD Clinical drug 81 136 View →
1650143 Doxycycline hyclate 100 MG Oral Tablet SCD Clinical drug 80 261 View →
751612 Nebivolol 10 MG Oral Tablet SCD Clinical drug 80 214 View →
251872 Pantoprazole 20 MG Delayed Release Oral Tablet SCD Clinical drug 80 213 View →
855344 Warfarin sodium 7.5 MG Oral Tablet SCD Clinical drug 80 198 View →
991039 Chlorpromazine hydrochloride 10 MG Oral Tablet SCD Clinical drug 80 134 View →
198052 Ondansetron 4 MG Oral Tablet SCD Clinical drug 79 259 View →
859052 Pramipexole dihydrochloride 1 MG Oral Tablet SCD Clinical drug 79 171 View →
312593 Prazosin 1 MG Oral Capsule SCD Clinical drug 79 170 View →
197625 Doxazosin 1 MG Oral Tablet SCD Clinical drug 79 126 View →
311724 Minoxidil 50 MG/ML Topical Solution SCD Clinical drug 79 101 View →
1366789 Lidocaine 50 MG/ML Rectal Cream SCD Clinical drug 79 98 View →
636671 Varenicline 0.5 MG Oral Tablet SCD Clinical drug 79 94 View →
1666372 1 ML phenylephrine hydrochloride 10 MG/ML Injection SCD Clinical drug 79 89 View →
313423 Tolnaftate 10 MG/ML Topical Solution SCD Clinical drug 79 88 View →
1049618 Oxycodone hydrochloride 30 MG Oral Tablet SCD Clinical drug 78 236 View →
313584 Venlafaxine 37.5 MG Oral Tablet SCD Clinical drug 78 220 View →
1049611 Oxycodone hydrochloride 15 MG Oral Tablet SCD Clinical drug 78 217 View →
855318 Warfarin sodium 3 MG Oral Tablet SCD Clinical drug 78 196 View →
896766 Labetalol hydrochloride 300 MG Oral Tablet SCD Clinical drug 78 169 View →
197628 Doxazosin 8 MG Oral Tablet SCD Clinical drug 78 124 View →
198335 Sulfamethoxazole 800 MG / trimethoprim 160 MG Oral Tablet SCD Clinical drug 77 257 View →
827073 Nebivolol 20 MG Oral Tablet SCD Clinical drug 77 208 View →
199047 Famotidine 10 MG Oral Tablet SCD Clinical drug 77 177 View →
859048 Pramipexole dihydrochloride 1.5 MG Oral Tablet SCD Clinical drug 77 170 View →
197419 Bumetanide 2 MG Oral Tablet SCD Clinical drug 77 140 View →
308761 Bismuth subsalicylate 262 MG Chewable Tablet SCD Clinical drug 77 111 View →
312086 Ondansetron 8 MG Oral Tablet SCD Clinical drug 76 222 View →
197381 Atenolol 50 MG Oral Tablet SCD Clinical drug 76 195 View →
314111 Mirtazapine 30 MG Oral Tablet SCD Clinical drug 76 192 View →
855172 Levocetirizine dihydrochloride 5 MG Oral Tablet SCD Clinical drug 76 185 View →
859033 Pramipexole dihydrochloride 0.125 MG Oral Tablet SCD Clinical drug 76 170 View →
312594 Prazosin 2 MG Oral Capsule SCD Clinical drug 76 163 View →
1098608 24 HR lamotrigine 300 MG Extended Release Oral Tablet SCD Clinical drug 76 138 View →
1146690 24 HR lamotrigine 250 MG Extended Release Oral Tablet SCD Clinical drug 76 138 View →
597987 Amlodipine 10 MG / atorvastatin 10 MG Oral Tablet SCD Clinical drug 76 131 View →
312847 Ropinirole 2 MG Oral Tablet SCD Clinical drug 76 128 View →
312564 Povidone-iodine 100 MG/ML Topical Solution SCD Clinical drug 76 119 View →
1665461 1 ML ketorolac tromethamine 30 MG/ML Injection SCD Clinical drug 76 92 View →
1249758 Lidocaine 0.04 MG/MG / menthol 0.01 MG/MG Medicated Patch SCD Clinical drug 75 291 View →
979471 Hydrochlorothiazide 25 MG / losartan potassium 100 MG Oral Tablet SCD Clinical drug 75 203 View →
905222 Hydralazine hydrochloride 100 MG Oral Tablet SCD Clinical drug 75 157 View →
349287 Fenofibrate 160 MG Oral Tablet SCD Clinical drug 75 145 View →
597967 Amlodipine 10 MG / atorvastatin 20 MG Oral Tablet SCD Clinical drug 75 130 View →
597977 Amlodipine 5 MG / atorvastatin 10 MG Oral Tablet SCD Clinical drug 75 130 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.