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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
2569619 Lonapegsomatropin-tcgd 4.3 MG Cartridge SCD Clinical drug 14 14 View →
2569621 Lonapegsomatropin-tcgd 4.3 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2569623 Lonapegsomatropin-tcgd 5.2 MG Cartridge SCD Clinical drug 14 14 View →
2569625 Lonapegsomatropin-tcgd 5.2 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2569627 Lonapegsomatropin-tcgd 6.3 MG Cartridge SCD Clinical drug 14 14 View →
2569629 Lonapegsomatropin-tcgd 6.3 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2569631 Lonapegsomatropin-tcgd 7.6 MG Cartridge SCD Clinical drug 14 14 View →
2569633 Lonapegsomatropin-tcgd 7.6 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2569635 Lonapegsomatropin-tcgd 9.1 MG Cartridge SCD Clinical drug 14 14 View →
2569637 Lonapegsomatropin-tcgd 9.1 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2719335 Tolvaptan 15 MG Oral Tablet SCD Clinical drug 14 14 View →
2719337 Tolvaptan 30 MG Oral Tablet SCD Clinical drug 14 14 View →
2721785 Lonapegsomatropin-tcgd 2.5 MG Cartridge SCD Clinical drug 14 14 View →
2721787 Lonapegsomatropin-tcgd 2.5 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2721789 Lonapegsomatropin-tcgd 2.1 MG Cartridge SCD Clinical drug 14 14 View →
2721791 Lonapegsomatropin-tcgd 2.1 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2721793 Lonapegsomatropin-tcgd 1.8 MG Cartridge SCD Clinical drug 14 14 View →
2721795 Lonapegsomatropin-tcgd 1.8 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2721797 Lonapegsomatropin-tcgd 1.4 MG Cartridge SCD Clinical drug 14 14 View →
2721799 Lonapegsomatropin-tcgd 1.4 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
2721801 Lonapegsomatropin-tcgd 0.7 MG Cartridge SCD Clinical drug 14 14 View →
2721803 Lonapegsomatropin-tcgd 0.7 MG Cartridge [Skytrofa] SBD Branded drug 14 14 View →
309679 Dexamethasone 0.001 MG/MG / neomycin 0.0035 MG/MG / polymyxin B 10 UNT/MG Ophthalmic Ointm... SCD Clinical drug 14 14 View →
310687 Hydrocortisone 10 MG/ML / neomycin 3.5 MG/ML / polymyxin B 10000 UNT/ML Otic Suspension SCD Clinical drug 14 14 View →
486146 24 HR nitroglycerin 0.6 MG/HR Transdermal System SCD Clinical drug 14 14 View →
486148 24 HR nitroglycerin 0.2 MG/HR Transdermal System SCD Clinical drug 14 14 View →
486152 24 HR nitroglycerin 0.4 MG/HR Transdermal System SCD Clinical drug 14 14 View →
750199 Amlodipine 10 MG / atorvastatin 10 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750203 Amlodipine 10 MG / atorvastatin 20 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750207 Amlodipine 10 MG / atorvastatin 40 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750211 Amlodipine 10 MG / atorvastatin 80 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750227 Amlodipine 5 MG / atorvastatin 10 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750231 Amlodipine 5 MG / atorvastatin 20 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750235 Amlodipine 5 MG / atorvastatin 40 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
750239 Amlodipine 5 MG / atorvastatin 80 MG Oral Tablet [Caduet] SBD Branded drug 14 14 View →
828539 Caspofungin acetate 70 MG Injection SCD Clinical drug 14 14 View →
828755 Caspofungin acetate 50 MG Injection SCD Clinical drug 14 14 View →
861657 24 HR nitroglycerin 0.1 MG/HR Transdermal System SCD Clinical drug 14 14 View →
1988308 24 HR diltiazem hydrochloride 120 MG Extended Release Oral Capsule [Tiadylt] SBD Branded drug 13 63 View →
209326 Nicotine 2 MG Chewing Gum [Nicorette] SBD Branded drug 13 61 View →
978654 Diethylpropion hydrochloride 25 MG Oral Tablet SCD Clinical drug 13 60 View →
406524 Doxycycline hyclate 75 MG Delayed Release Oral Tablet SCD Clinical drug 13 40 View →
434018 Doxycycline hyclate 100 MG Delayed Release Oral Tablet SCD Clinical drug 13 40 View →
763179 {48 (prednisone 5 MG Oral Tablet) } Pack GPCK Generic pack 13 40 View →
803348 Phentermine hydrochloride 37.5 MG Oral Capsule SCD Clinical drug 13 40 View →
2709608 Sitagliptin phosphate 50 MG Oral Tablet SCD Clinical drug 13 34 View →
1550940 Colchicine 0.6 MG Oral Capsule SCD Clinical drug 13 33 View →
688892 Calcium carbonate 800 MG / famotidine 10 MG / magnesium hydroxide 165 MG Chewable Tablet [... SBD Branded drug 13 32 View →
197622 Dipyridamole 50 MG Oral Tablet SCD Clinical drug 13 31 View →
1049632 Diphenhydramine hydrochloride 25 MG Oral Tablet [Benadryl] SBD Branded drug 13 30 View →
1795254 250 ML glucose 50 MG/ML / sodium chloride 4.5 MG/ML Injection SCD Clinical drug 13 30 View →
1867943 30 ML epinephrine 0.005 MG/ML / lidocaine hydrochloride 10 MG/ML Injection SCD Clinical drug 13 30 View →
1868028 10 ML epinephrine 0.005 MG/ML / lidocaine hydrochloride 20 MG/ML Injection SCD Clinical drug 13 30 View →
836358 Ipratropium bromide 0.2 MG/ML Inhalation Solution SCD Clinical drug 13 30 View →
860225 Megestrol acetate 40 MG/ML Oral Suspension SCD Clinical drug 13 30 View →
1010692 20 ML epinephrine 0.005 MG/ML / lidocaine hydrochloride 20 MG/ML Injection [Xylocaine with... SBD Branded drug 13 29 View →
1010749 Epinephrine 0.005 MG/ML / lidocaine hydrochloride 5 MG/ML Injectable Solution [Xylocaine w... SBD Branded drug 13 29 View →
1737345 50 ML lidocaine hydrochloride 5 MG/ML Injection [Xylocaine] SBD Branded drug 13 29 View →
968849 Nicotine 2 MG Oral Lozenge [Nicorette] SBD Branded drug 13 29 View →
968851 Nicotine 4 MG Oral Lozenge [Nicorette] SBD Branded drug 13 29 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.