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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
313190 Tacrolimus 0.5 MG Oral Capsule SCD Clinical drug 70 93 View →
313412 Tizanidine 2 MG Oral Tablet SCD Clinical drug 69 249 View →
197313 Acyclovir 800 MG Oral Tablet SCD Clinical drug 69 241 View →
854873 Zolpidem tartrate 10 MG Oral Tablet SCD Clinical drug 69 235 View →
2387532 Acetaminophen 250 MG / ibuprofen 125 MG Oral Tablet SCD Clinical drug 69 200 View →
856519 Propranolol hydrochloride 40 MG Oral Tablet SCD Clinical drug 69 190 View →
199246 Glimepiride 2 MG Oral Tablet SCD Clinical drug 69 158 View →
1043244 Zinc pyrithione 10 MG/ML Medicated Shampoo [Head & Shoulders] SBD Branded drug 69 155 View →
636045 Hydrochlorothiazide 25 MG / valsartan 320 MG Oral Tablet SCD Clinical drug 69 149 View →
1099678 Divalproex sodium 250 MG Delayed Release Oral Tablet SCD Clinical drug 69 148 View →
582901 Isopropyl alcohol 0.91 ML/ML Topical Solution SCD Clinical drug 69 115 View →
1724786 30 ML bupivacaine hydrochloride 7.5 MG/ML Injection SCD Clinical drug 69 87 View →
998329 Undecylenic acid 250 MG/ML Topical Solution SCD Clinical drug 69 78 View →
245593 Sodium fluoride 0.02 MG/MG Oral Gel SCD Clinical drug 69 72 View →
979464 Hydrochlorothiazide 12.5 MG / losartan potassium 100 MG Oral Tablet SCD Clinical drug 68 190 View →
991086 Dicyclomine hydrochloride 20 MG Oral Tablet SCD Clinical drug 68 182 View →
430902 Baclofen 5 MG Oral Tablet SCD Clinical drug 68 153 View →
200284 Hydrochlorothiazide 12.5 MG / valsartan 80 MG Oral Tablet SCD Clinical drug 68 151 View →
313393 Thyroid (USP) 90 MG Oral Tablet SCD Clinical drug 68 101 View →
1665459 2 ML ketorolac tromethamine 30 MG/ML Injection SCD Clinical drug 68 83 View →
197583 Dexamethasone 6 MG Oral Tablet SCD Clinical drug 68 79 View →
856364 Trazodone hydrochloride 150 MG Oral Tablet SCD Clinical drug 67 215 View →
205304 Telmisartan 40 MG Oral Tablet SCD Clinical drug 67 207 View →
197321 Alprazolam 1 MG Oral Tablet SCD Clinical drug 67 199 View →
314277 Venlafaxine 50 MG Oral Tablet SCD Clinical drug 67 199 View →
628953 Potassium chloride 10 MEQ Extended Release Oral Tablet SCD Clinical drug 67 189 View →
884185 Clonidine hydrochloride 0.2 MG Oral Tablet SCD Clinical drug 67 182 View →
996561 Memantine hydrochloride 10 MG Oral Tablet SCD Clinical drug 67 178 View →
199247 Glimepiride 4 MG Oral Tablet SCD Clinical drug 67 152 View →
200285 Hydrochlorothiazide 12.5 MG / valsartan 160 MG Oral Tablet SCD Clinical drug 67 147 View →
485484 Tizanidine 6 MG Oral Capsule SCD Clinical drug 67 146 View →
636042 Hydrochlorothiazide 12.5 MG / valsartan 320 MG Oral Tablet SCD Clinical drug 67 146 View →
198141 Prazosin 5 MG Oral Capsule SCD Clinical drug 67 142 View →
349353 Hydrochlorothiazide 25 MG / valsartan 160 MG Oral Tablet SCD Clinical drug 67 142 View →
402506 12 HR carbamazepine 400 MG Extended Release Oral Tablet SCD Clinical drug 67 135 View →
312076 Olanzapine 10 MG Disintegrating Oral Tablet SCD Clinical drug 67 127 View →
314155 Olanzapine 5 MG Disintegrating Oral Tablet SCD Clinical drug 67 127 View →
197417 Bumetanide 0.5 MG Oral Tablet SCD Clinical drug 67 126 View →
862019 24 HR guanfacine 3 MG Extended Release Oral Tablet SCD Clinical drug 67 118 View →
721794 24 HR quetiapine 300 MG Extended Release Oral Tablet SCD Clinical drug 67 111 View →
1248354 Diphenhydramine hydrochloride 1.67 MG/ML Oral Solution SCD Clinical drug 67 97 View →
1359350 Bacitracin 0.5 UNT/MG / neomycin 0.0035 MG/MG / polymyxin B 10 UNT/MG / pramoxine hydrochl... SCD Clinical drug 67 84 View →
992447 Promethazine hydrochloride 25 MG Oral Tablet SCD Clinical drug 66 241 View →
198013 Naproxen 250 MG Oral Tablet SCD Clinical drug 66 232 View →
854876 Zolpidem tartrate 5 MG Oral Tablet SCD Clinical drug 66 222 View →
308048 Alprazolam 0.5 MG Oral Tablet SCD Clinical drug 66 208 View →
198242 Temazepam 30 MG Oral Capsule SCD Clinical drug 66 189 View →
197701 Fluconazole 50 MG Oral Tablet SCD Clinical drug 66 186 View →
200096 Irbesartan 300 MG Oral Tablet SCD Clinical drug 66 183 View →
200224 Montelukast 10 MG Oral Tablet SCD Clinical drug 66 173 View →
485485 Tizanidine 4 MG Oral Capsule SCD Clinical drug 66 156 View →
858817 Enalapril maleate 10 MG Oral Tablet SCD Clinical drug 66 146 View →
858810 Enalapril maleate 20 MG Oral Tablet SCD Clinical drug 66 141 View →
402505 12 HR carbamazepine 200 MG Extended Release Oral Tablet SCD Clinical drug 66 134 View →
351107 Olanzapine 15 MG Disintegrating Oral Tablet SCD Clinical drug 66 126 View →
351108 Olanzapine 20 MG Disintegrating Oral Tablet SCD Clinical drug 66 126 View →
862025 24 HR guanfacine 4 MG Extended Release Oral Tablet SCD Clinical drug 66 117 View →
247835 Ethanol 0.62 ML/ML Topical Solution SCD Clinical drug 66 113 View →
208545 Thyroid (USP) 120 MG Oral Tablet SCD Clinical drug 66 98 View →
1373045 12 HR dextromethorphan polistirex 6 MG/ML Extended Release Suspension SCD Clinical drug 66 94 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.