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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
351265 Buprenorphine 8 MG Sublingual Tablet SCD Clinical drug 36 75 View →
349480 Vardenafil 20 MG Oral Tablet SCD Clinical drug 36 73 View →
885219 Benztropine mesylate 0.5 MG Oral Tablet SCD Clinical drug 36 73 View →
1650142 Doxycycline monohydrate 100 MG Oral Tablet SCD Clinical drug 36 68 View →
1085686 Triamcinolone acetonide 5 MG/ML Topical Cream SCD Clinical drug 36 67 View →
1739772 Brivaracetam 25 MG Oral Tablet SCD Clinical drug 36 65 View →
1739780 Brivaracetam 75 MG Oral Tablet SCD Clinical drug 36 65 View →
308962 Captopril 100 MG Oral Tablet SCD Clinical drug 36 62 View →
106302 Tretinoin 0.25 MG/ML Topical Cream SCD Clinical drug 36 60 View →
856569 24 HR propranolol hydrochloride 80 MG Extended Release Oral Capsule SCD Clinical drug 36 60 View →
197738 Glycopyrrolate 1 MG Oral Tablet SCD Clinical drug 36 58 View →
884385 Dextroamphetamine sulfate 10 MG Oral Tablet SCD Clinical drug 36 56 View →
884386 Dextroamphetamine sulfate 5 MG Oral Tablet SCD Clinical drug 36 56 View →
898359 Amlodipine 5 MG / benazepril hydrochloride 40 MG Oral Capsule SCD Clinical drug 36 55 View →
1086784 Vilazodone hydrochloride 40 MG Oral Tablet SCD Clinical drug 36 54 View →
1541890 Sunitinib 37.5 MG Oral Capsule SCD Clinical drug 36 48 View →
1672917 10 ML bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injection SCD Clinical drug 36 48 View →
1672919 30 ML bupivacaine hydrochloride 5 MG/ML / epinephrine 0.005 MG/ML Injection SCD Clinical drug 36 48 View →
310003 Dofetilide 0.125 MG Oral Capsule SCD Clinical drug 36 48 View →
310005 Dofetilide 0.5 MG Oral Capsule SCD Clinical drug 36 48 View →
616279 Sunitinib 12.5 MG Oral Capsule SCD Clinical drug 36 48 View →
616285 Sunitinib 25 MG Oral Capsule SCD Clinical drug 36 48 View →
616289 Sunitinib 50 MG Oral Capsule SCD Clinical drug 36 48 View →
597195 Carboplatin 10 MG/ML Injectable Solution SCD Clinical drug 36 45 View →
861643 Pitavastatin calcium 1 MG Oral Tablet SCD Clinical drug 36 45 View →
1100075 Abiraterone acetate 250 MG Oral Tablet SCD Clinical drug 36 41 View →
1594589 Succinylcholine chloride 20 MG/ML Injectable Solution SCD Clinical drug 36 41 View →
1362706 Mexiletine hydrochloride 150 MG Oral Capsule SCD Clinical drug 36 39 View →
197696 72 HR fentanyl 0.075 MG/HR Transdermal System SCD Clinical drug 36 36 View →
197782 Hydrocortisone 10 MG Oral Tablet SCD Clinical drug 36 36 View →
245134 72 HR fentanyl 0.025 MG/HR Transdermal System SCD Clinical drug 36 36 View →
245135 72 HR fentanyl 0.05 MG/HR Transdermal System SCD Clinical drug 36 36 View →
245136 72 HR fentanyl 0.1 MG/HR Transdermal System SCD Clinical drug 36 36 View →
392038 Sodium fluoride 0.011 MG/MG Toothpaste SCD Clinical drug 36 36 View →
577057 72 HR fentanyl 0.012 MG/HR Transdermal System SCD Clinical drug 36 36 View →
1721473 Ampicillin 250 MG Injection SCD Clinical drug 36 30 View →
993890 Acetaminophen 300 MG / codeine phosphate 60 MG Oral Tablet SCD Clinical drug 35 134 View →
854919 Bisoprolol fumarate 5 MG / hydrochlorothiazide 6.25 MG Oral Tablet SCD Clinical drug 35 94 View →
485489 Temazepam 22.5 MG Oral Capsule SCD Clinical drug 35 86 View →
616402 Duloxetine 40 MG Delayed Release Oral Capsule SCD Clinical drug 35 84 View →
197657 Estradiol 0.5 MG Oral Tablet SCD Clinical drug 35 79 View →
834061 Penicillin V potassium 250 MG Oral Tablet SCD Clinical drug 35 77 View →
999991 Amlodipine 10 MG / hydrochlorothiazide 25 MG / olmesartan medoxomil 40 MG Oral Tablet SCD Clinical drug 35 75 View →
999996 Amlodipine 5 MG / hydrochlorothiazide 12.5 MG / olmesartan medoxomil 40 MG Oral Tablet SCD Clinical drug 35 75 View →
200060 Mycophenolate mofetil 500 MG Oral Tablet SCD Clinical drug 35 72 View →
310289 Fenofibrate 200 MG Oral Capsule SCD Clinical drug 35 70 View →
830877 24 HR diltiazem hydrochloride 180 MG Extended Release Oral Tablet SCD Clinical drug 35 70 View →
830879 24 HR diltiazem hydrochloride 240 MG Extended Release Oral Tablet SCD Clinical drug 35 70 View →
830882 24 HR diltiazem hydrochloride 300 MG Extended Release Oral Tablet SCD Clinical drug 35 70 View →
830897 24 HR diltiazem hydrochloride 360 MG Extended Release Oral Tablet SCD Clinical drug 35 70 View →
830900 24 HR diltiazem hydrochloride 420 MG Extended Release Oral Tablet SCD Clinical drug 35 70 View →
1085636 Triamcinolone acetonide 0.001 MG/MG Topical Ointment SCD Clinical drug 35 63 View →
197604 Digoxin 0.125 MG Oral Tablet SCD Clinical drug 35 63 View →
597768 Deferasirox 125 MG Tablet for Oral Suspension SCD Clinical drug 35 62 View →
597770 Deferasirox 250 MG Tablet for Oral Suspension SCD Clinical drug 35 62 View →
597772 Deferasirox 500 MG Tablet for Oral Suspension SCD Clinical drug 35 62 View →
1305603 12 HR guaifenesin 600 MG / pseudoephedrine hydrochloride 60 MG Extended Release Oral Table... SCD Clinical drug 35 60 View →
240128 Ethinyl estradiol 0.035 MG / norgestimate 0.25 MG Oral Tablet SCD Clinical drug 35 59 View →
314182 Potassium chloride 2.67 MEQ/ML Oral Solution SCD Clinical drug 35 56 View →
403884 Levetiracetam 100 MG/ML Oral Solution SCD Clinical drug 35 56 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.