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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
209459 Acetaminophen 500 MG Oral Tablet [Tylenol] SBD Branded drug 31 116 View →
1094107 Phenazopyridine hydrochloride 100 MG Oral Tablet SCD Clinical drug 31 88 View →
1593068 24 HR dapagliflozin 10 MG / metformin hydrochloride 500 MG Extended Release Oral Tablet SCD Clinical drug 31 72 View →
854880 Zolpidem tartrate 12.5 MG Extended Release Oral Tablet SCD Clinical drug 31 72 View →
403966 Zonisamide 25 MG Oral Capsule SCD Clinical drug 31 70 View →
966793 Doxepin 6 MG Oral Tablet SCD Clinical drug 31 69 View →
904431 Alendronic acid 70 MG Oral Tablet SCD Clinical drug 31 68 View →
1044532 Calcium carbonate 750 MG Chewable Tablet [Tums] SBD Branded drug 31 66 View →
1233282 Benzalkonium chloride 1 MG/ML Medicated Liquid Soap SCD Clinical drug 31 65 View →
1363309 Chlorpheniramine maleate 4 MG Oral Tablet SCD Clinical drug 31 64 View →
198509 Bisacodyl 10 MG Rectal Suppository SCD Clinical drug 31 63 View →
309049 Cefadroxil 500 MG Oral Capsule SCD Clinical drug 31 62 View →
199058 Mycophenolate mofetil 250 MG Oral Capsule SCD Clinical drug 31 61 View →
891893 Morphine sulfate 60 MG Extended Release Oral Tablet SCD Clinical drug 31 60 View →
751139 {35 (lamotrigine 25 MG Oral Tablet) } Pack GPCK Generic pack 31 57 View →
751563 {7 (lamotrigine 100 MG Oral Tablet) / 42 (lamotrigine 25 MG Oral Tablet) } Pack GPCK Generic pack 31 57 View →
753451 {14 (lamotrigine 100 MG Oral Tablet) / 84 (lamotrigine 25 MG Oral Tablet) } Pack GPCK Generic pack 31 57 View →
993856 Lacosamide 10 MG/ML Oral Solution SCD Clinical drug 31 57 View →
312748 Quinapril 10 MG Oral Tablet SCD Clinical drug 31 55 View →
197606 Digoxin 0.25 MG Oral Tablet SCD Clinical drug 31 53 View →
1117562 24 HR loratadine 10 MG / pseudoephedrine sulfate 240 MG Extended Release Oral Tablet SCD Clinical drug 31 51 View →
1808217 100 ML propofol 10 MG/ML Injection SCD Clinical drug 31 51 View →
1808222 50 ML propofol 10 MG/ML Injection SCD Clinical drug 31 51 View →
1654149 Colloidal oatmeal 5 MG/ML Topical Cream SCD Clinical drug 31 50 View →
1536675 Aspirin 325 MG / citric acid 1000 MG / sodium bicarbonate 1916 MG Effervescent Oral Tablet SCD Clinical drug 31 49 View →
724859 Armodafinil 150 MG Oral Tablet SCD Clinical drug 31 49 View →
608328 Rasagiline 1 MG Oral Tablet SCD Clinical drug 31 47 View →
636664 Rasagiline 0.5 MG Oral Tablet SCD Clinical drug 31 47 View →
865105 Salicylic acid 5 MG/ML Medicated Liquid Soap SCD Clinical drug 31 45 View →
1658259 50 ML magnesium sulfate 40 MG/ML Injection SCD Clinical drug 31 44 View →
1012384 Bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injectable Solution SCD Clinical drug 31 41 View →
1250685 Loperamide hydrochloride 0.133 MG/ML Oral Suspension SCD Clinical drug 31 40 View →
1293649 Glycerin 144 MG/ML / petrolatum 150 MG/ML / phenylephrine hydrochloride 2.5 MG/ML / pramox... SCD Clinical drug 31 39 View →
1094538 Acetaminophen 325 MG / dextromethorphan hydrobromide 10 MG / phenylephrine hydrochloride 5... SCD Clinical drug 31 35 View →
1487074 Diclofenac sodium 20 MG/ML Topical Solution SCD Clinical drug 31 31 View →
1603495 72 HR fentanyl 0.0375 MG/HR Transdermal System SCD Clinical drug 31 31 View →
1603498 72 HR fentanyl 0.0625 MG/HR Transdermal System SCD Clinical drug 31 31 View →
1665050 Cefazolin 1000 MG Injection SCD Clinical drug 31 31 View →
1803937 Leucovorin 200 MG Injection SCD Clinical drug 31 31 View →
238003 168 HR estradiol 0.00208 MG/HR Transdermal System SCD Clinical drug 31 31 View →
238004 168 HR estradiol 0.00417 MG/HR Transdermal System SCD Clinical drug 31 31 View →
241527 168 HR estradiol 0.00312 MG/HR Transdermal System SCD Clinical drug 31 31 View →
242333 168 HR estradiol 0.00104 MG/HR Transdermal System SCD Clinical drug 31 31 View →
312070 1 ML octreotide 0.5 MG/ML Injection SCD Clinical drug 31 31 View →
403922 168 HR estradiol 0.00156 MG/HR Transdermal System SCD Clinical drug 31 31 View →
403923 168 HR estradiol 0.0025 MG/HR Transdermal System SCD Clinical drug 31 31 View →
310792 Hydrochlorothiazide 12.5 MG / irbesartan 150 MG Oral Tablet SCD Clinical drug 30 92 View →
968766 Phentermine hydrochloride 15 MG Oral Capsule SCD Clinical drug 30 85 View →
197889 Lithium carbonate 300 MG Oral Capsule SCD Clinical drug 30 73 View →
598006 Erythromycin 250 MG Oral Tablet SCD Clinical drug 30 73 View →
1795610 250 ML glucose 50 MG/ML Injection SCD Clinical drug 30 69 View →
828358 24 HR cyclobenzaprine hydrochloride 15 MG Extended Release Oral Capsule SCD Clinical drug 30 68 View →
153822 Candesartan cilexetil 4 MG Oral Tablet SCD Clinical drug 30 64 View →
153823 Candesartan cilexetil 8 MG Oral Tablet SCD Clinical drug 30 64 View →
800111 Calcium chloride 0.000996 MEQ/ML / glucose 1 MG/ML / magnesium chloride 0.0000245 MEQ/ML /... SCD Clinical drug 30 60 View →
800115 Calcium chloride 0.000996 MEQ/ML / glucose 1 MG/ML / magnesium chloride 0.0000245 MEQ/ML /... SBD Branded drug 30 60 View →
800472 Calcium chloride 0.000996 MEQ/ML / glucose 0.6 MG/ML / magnesium chloride 0.0000245 MEQ/ML... SCD Clinical drug 30 60 View →
800474 Calcium chloride 0.000996 MEQ/ML / glucose 0.6 MG/ML / magnesium chloride 0.0000245 MEQ/ML... SBD Branded drug 30 60 View →
830874 24 HR diltiazem hydrochloride 120 MG Extended Release Oral Tablet SCD Clinical drug 30 60 View →
848131 Amlodipine 10 MG / hydrochlorothiazide 12.5 MG / valsartan 160 MG Oral Tablet SCD Clinical drug 30 55 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.