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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
597980 Amlodipine 5 MG / atorvastatin 20 MG Oral Tablet SCD Clinical drug 75 130 View →
597984 Amlodipine 5 MG / atorvastatin 40 MG Oral Tablet SCD Clinical drug 75 130 View →
597990 Amlodipine 10 MG / atorvastatin 40 MG Oral Tablet SCD Clinical drug 75 130 View →
198377 Tacrolimus 1 MG Oral Capsule SCD Clinical drug 75 100 View →
1724884 30 ML bupivacaine hydrochloride 5 MG/ML Injection SCD Clinical drug 75 95 View →
702050 Carbamide peroxide 65 MG/ML Otic Solution SCD Clinical drug 75 85 View →
860981 24 HR metformin hydrochloride 750 MG Extended Release Oral Tablet SCD Clinical drug 74 235 View →
197527 Clonazepam 0.5 MG Oral Tablet SCD Clinical drug 74 221 View →
751618 Nebivolol 2.5 MG Oral Tablet SCD Clinical drug 74 203 View →
596843 Lansoprazole 15 MG Delayed Release Oral Capsule SCD Clinical drug 74 177 View →
850091 24 HR lamotrigine 50 MG Extended Release Oral Tablet SCD Clinical drug 74 140 View →
404011 Amlodipine 5 MG / atorvastatin 80 MG Oral Tablet SCD Clinical drug 74 129 View →
404013 Amlodipine 10 MG / atorvastatin 80 MG Oral Tablet SCD Clinical drug 74 129 View →
312846 Ropinirole 0.5 MG Oral Tablet SCD Clinical drug 74 127 View →
253017 Magnesium hydroxide 80 MG/ML Oral Suspension SCD Clinical drug 74 88 View →
197901 Lorazepam 1 MG Oral Tablet SCD Clinical drug 73 264 View →
855906 Diclofenac sodium 50 MG Delayed Release Oral Tablet SCD Clinical drug 73 232 View →
313565 Valacyclovir 500 MG Oral Tablet SCD Clinical drug 73 222 View →
199890 Topiramate 200 MG Oral Tablet SCD Clinical drug 73 215 View →
312136 Oxcarbazepine 150 MG Oral Tablet SCD Clinical drug 73 144 View →
850087 24 HR lamotrigine 100 MG Extended Release Oral Tablet SCD Clinical drug 73 135 View →
1737568 2 ML lidocaine hydrochloride 10 MG/ML Injection SCD Clinical drug 73 131 View →
862006 24 HR guanfacine 1 MG Extended Release Oral Tablet SCD Clinical drug 73 125 View →
645146 Minoxidil 50 MG/ML Topical Foam SCD Clinical drug 73 121 View →
721791 24 HR quetiapine 200 MG Extended Release Oral Tablet SCD Clinical drug 73 119 View →
728109 Oseltamivir 30 MG Oral Capsule SCD Clinical drug 73 89 View →
1297288 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / doxylamine succinate 6.25 MG... SCD Clinical drug 73 88 View →
205305 Telmisartan 80 MG Oral Tablet SCD Clinical drug 72 216 View →
197380 Atenolol 25 MG Oral Tablet SCD Clinical drug 72 198 View →
200095 Irbesartan 150 MG Oral Tablet SCD Clinical drug 72 195 View →
312357 Phenobarbital 15 MG Oral Tablet SCD Clinical drug 72 193 View →
978006 Loperamide hydrochloride 2 MG Oral Capsule SCD Clinical drug 72 172 View →
1099074 12 HR dextromethorphan hydrobromide 60 MG / guaifenesin 1200 MG Extended Release Oral Tabl... SCD Clinical drug 72 138 View →
312935 Sennosides, USP 8.6 MG Oral Tablet SCD Clinical drug 72 129 View →
895670 24 HR quetiapine 150 MG Extended Release Oral Tablet SCD Clinical drug 72 118 View →
313387 Thyroid (USP) 30 MG Oral Tablet SCD Clinical drug 72 116 View →
721796 24 HR quetiapine 400 MG Extended Release Oral Tablet SCD Clinical drug 72 116 View →
313391 Thyroid (USP) 60 MG Oral Tablet SCD Clinical drug 72 112 View →
728113 Oseltamivir 45 MG Oral Capsule SCD Clinical drug 72 88 View →
313564 Valacyclovir 1000 MG Oral Tablet SCD Clinical drug 71 267 View →
1738503 Paroxetine hydrochloride 30 MG Oral Tablet SCD Clinical drug 71 232 View →
200371 Citalopram 20 MG Oral Tablet SCD Clinical drug 71 211 View →
1801294 Microencapsulated potassium chloride 20 MEQ Extended Release Oral Tablet SCD Clinical drug 71 205 View →
993503 12 HR bupropion hydrochloride 100 MG Extended Release Oral Tablet SCD Clinical drug 71 197 View →
862013 24 HR guanfacine 2 MG Extended Release Oral Tablet SCD Clinical drug 71 124 View →
1043543 Dextromethorphan hydrobromide 1 MG/ML / guaifenesin 20 MG/ML / phenylephrine hydrochloride... SCD Clinical drug 71 73 View →
197900 Lorazepam 0.5 MG Oral Tablet SCD Clinical drug 70 264 View →
313580 Venlafaxine 100 MG Oral Tablet SCD Clinical drug 70 207 View →
351249 Escitalopram 5 MG Oral Tablet SCD Clinical drug 70 205 View →
313582 Venlafaxine 25 MG Oral Tablet SCD Clinical drug 70 202 View →
979468 Hydrochlorothiazide 12.5 MG / losartan potassium 50 MG Oral Tablet SCD Clinical drug 70 201 View →
198083 Phenobarbital 100 MG Oral Tablet SCD Clinical drug 70 191 View →
198089 Phenobarbital 60 MG Oral Tablet SCD Clinical drug 70 191 View →
197528 Clonazepam 1 MG Oral Tablet SCD Clinical drug 70 174 View →
312362 Phenobarbital 30 MG Oral Tablet SCD Clinical drug 70 172 View →
855338 Warfarin sodium 6 MG Oral Tablet SCD Clinical drug 70 148 View →
312138 Oxcarbazepine 600 MG Oral Tablet SCD Clinical drug 70 142 View →
905199 Hydralazine hydrochloride 10 MG Oral Tablet SCD Clinical drug 70 139 View →
900164 24 HR lamotrigine 25 MG Extended Release Oral Tablet SCD Clinical drug 70 132 View →
797534 Docosanol 100 MG/ML Topical Cream SCD Clinical drug 70 104 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.