Home › NDC Lookup › RxCUI directory

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
727137 Camphor 0.048 MG/MG / Eucalyptus oil 0.012 MG/MG / menthol 0.026 MG/MG Topical Ointment SCD Clinical drug 54 69 View →
1659131 Piperacillin 2000 MG / tazobactam 250 MG Injection SCD Clinical drug 54 54 View →
1728077 Pemetrexed 100 MG Injection SCD Clinical drug 54 54 View →
1734917 Cyclophosphamide 500 MG Injection SCD Clinical drug 54 54 View →
1734919 Cyclophosphamide 1000 MG Injection SCD Clinical drug 54 54 View →
1734921 Cyclophosphamide 2000 MG Injection SCD Clinical drug 54 54 View →
1721475 Ampicillin 1000 MG Injection SCD Clinical drug 54 48 View →
197591 Diazepam 5 MG Oral Tablet SCD Clinical drug 53 196 View →
197589 Diazepam 10 MG Oral Tablet SCD Clinical drug 53 181 View →
351254 Metaxalone 800 MG Oral Tablet SCD Clinical drug 53 178 View →
197518 Clindamycin 150 MG Oral Capsule SCD Clinical drug 53 174 View →
261962 Ramipril 10 MG Oral Capsule SCD Clinical drug 53 147 View →
310410 Folic acid 1 MG Oral Tablet SCD Clinical drug 53 133 View →
311277 Lansoprazole 30 MG Delayed Release Oral Capsule SCD Clinical drug 53 124 View →
1099569 24 HR divalproex sodium 500 MG Extended Release Oral Tablet SCD Clinical drug 53 112 View →
898690 Benazepril hydrochloride 20 MG Oral Tablet SCD Clinical drug 53 110 View →
308194 Amoxicillin 875 MG Oral Tablet SCD Clinical drug 53 107 View →
198371 Torsemide 20 MG Oral Tablet SCD Clinical drug 53 83 View →
1011852 Lidocaine hydrochloride 0.02 MG/MG Topical Gel SCD Clinical drug 53 81 View →
1188426 Carboxymethylcellulose sodium 5 MG/ML Ophthalmic Solution SCD Clinical drug 53 76 View →
866103 24 HR paliperidone 1.5 MG Extended Release Oral Tablet SCD Clinical drug 53 71 View →
309594 Vitamin B12 1 MG/ML Injectable Solution SCD Clinical drug 53 70 View →
1116927 Dexamethasone phosphate 4 MG/ML Injectable Solution SCD Clinical drug 53 62 View →
197577 Dexamethasone 0.5 MG Oral Tablet SCD Clinical drug 53 55 View →
1728072 Pemetrexed 500 MG Injection SCD Clinical drug 53 53 View →
197887 Hydrochlorothiazide 25 MG / lisinopril 20 MG Oral Tablet SCD Clinical drug 52 158 View →
197322 Alprazolam 2 MG Oral Tablet SCD Clinical drug 52 149 View →
1049686 Oxycodone hydrochloride 20 MG Oral Tablet SCD Clinical drug 52 143 View →
197445 Carbidopa 25 MG / levodopa 250 MG Oral Tablet SCD Clinical drug 52 138 View →
403855 Hydrochlorothiazide 25 MG / olmesartan medoxomil 40 MG Oral Tablet SCD Clinical drug 52 137 View →
199245 Glimepiride 1 MG Oral Tablet SCD Clinical drug 52 118 View →
198076 Perphenazine 2 MG Oral Tablet SCD Clinical drug 52 107 View →
692783 Loratadine 1 MG/ML Oral Solution SCD Clinical drug 52 73 View →
1792144 1 ML triamcinolone acetonide 40 MG/ML Injection SCD Clinical drug 52 62 View →
485287 Menthol 5.4 MG Oral Lozenge SCD Clinical drug 52 61 View →
205023 Salicylic acid 30 MG/ML Medicated Shampoo SCD Clinical drug 52 56 View →
237870 Aluminum hydroxide 80 MG/ML / magnesium hydroxide 80 MG/ML / simethicone 8 MG/ML Oral Susp... SCD Clinical drug 52 55 View →
1649990 Doxycycline monohydrate 100 MG Oral Capsule SCD Clinical drug 51 170 View →
197446 Carisoprodol 350 MG Oral Tablet SCD Clinical drug 51 147 View →
808753 24 HR venlafaxine 75 MG Extended Release Oral Tablet SCD Clinical drug 51 128 View →
1807631 50 ML sodium chloride 9 MG/ML Injection SCD Clinical drug 51 127 View →
313217 Terazosin 2 MG Oral Capsule SCD Clinical drug 51 113 View →
858804 Enalapril maleate 2.5 MG Oral Tablet SCD Clinical drug 51 109 View →
351267 Buprenorphine 8 MG / naloxone 2 MG Sublingual Tablet SCD Clinical drug 51 106 View →
351133 Fenofibrate 54 MG Oral Tablet SCD Clinical drug 51 96 View →
259966 Methylprednisolone 4 MG Oral Tablet SCD Clinical drug 51 84 View →
283641 Calcium carbonate 800 MG / famotidine 10 MG / magnesium hydroxide 165 MG Chewable Tablet SCD Clinical drug 51 84 View →
898353 Amlodipine 5 MG / benazepril hydrochloride 10 MG Oral Capsule SCD Clinical drug 51 82 View →
1719862 1 ML haloperidol decanoate 50 MG/ML Injection SCD Clinical drug 51 79 View →
1111343 Olopatadine 2 MG/ML Ophthalmic Solution SCD Clinical drug 51 71 View →
103951 Tolnaftate 10 MG/ML Topical Cream SCD Clinical drug 51 66 View →
252294 Simethicone 180 MG Oral Capsule SCD Clinical drug 51 63 View →
403853 Hydrochlorothiazide 12.5 MG / olmesartan medoxomil 20 MG Oral Tablet SCD Clinical drug 50 138 View →
311726 Mirtazapine 45 MG Oral Tablet SCD Clinical drug 50 136 View →
863619 24 HR oxybutynin chloride 10 MG Extended Release Oral Tablet SCD Clinical drug 50 120 View →
312641 Progesterone 200 MG Oral Capsule SCD Clinical drug 50 119 View →
308182 Amoxicillin 250 MG Oral Capsule SCD Clinical drug 50 118 View →
1020365 Benzalkonium chloride 1.3 MG/ML Topical Foam SCD Clinical drug 50 112 View →
898719 Benazepril hydrochloride 40 MG Oral Tablet SCD Clinical drug 50 97 View →
308189 Amoxicillin 80 MG/ML Oral Suspension SCD Clinical drug 50 88 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.