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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
885857 Balsalazide disodium 750 MG Oral Capsule SCD Clinical drug 9 12 View →
992441 Promethazine hydrochloride 12.5 MG Rectal Suppository SCD Clinical drug 9 12 View →
1536498 Aspirin 325 MG / dextromethorphan hydrobromide 10 MG / phenylephrine bitartrate 7.8 MG Eff... SCD Clinical drug 9 11 View →
1543177 Tavaborole 43.5 MG/ML Topical Solution SCD Clinical drug 9 11 View →
1546588 Salicylic acid 0.02 MG/MG Medicated Patch SCD Clinical drug 9 11 View →
197556 Danazol 50 MG Oral Capsule SCD Clinical drug 9 11 View →
197969 Methylprednisolone 2 MG Oral Tablet SCD Clinical drug 9 11 View →
198313 Triamterene 50 MG Oral Capsule SCD Clinical drug 9 11 View →
2049841 Acetaminophen 325 MG / chlorpheniramine maleate 2 MG / dextromethorphan hydrobromide 10 MG... SCD Clinical drug 9 11 View →
2117608 100 ML calcium gluconate 20 MG/ML Injection SCD Clinical drug 9 11 View →
2117610 50 ML calcium gluconate 20 MG/ML Injection SCD Clinical drug 9 11 View →
2123045 Menthol 0.0044 MG/MG / zinc oxide 0.206 MG/MG Topical Ointment SCD Clinical drug 9 11 View →
2170286 100 ML tranexamic acid 10 MG/ML Injection SCD Clinical drug 9 11 View →
2474269 1 ML fentanyl 0.05 MG/ML Prefilled Syringe SCD Clinical drug 9 11 View →
260260 Carbidopa 25 MG Oral Tablet SCD Clinical drug 9 11 View →
2642830 Thyroid (USP) 90 MG Oral Tablet [Niva Thyroid] SBD Branded drug 9 11 View →
2670677 Acetaminophen 650 MG / diphenhydramine hydrochloride 25 MG Powder for Oral Solution SCD Clinical drug 9 11 View →
313036 Sodium fluoride 1.1 MG Chewable Tablet SCD Clinical drug 9 11 View →
562266 Clindamycin 15 MG/ML Oral Solution SCD Clinical drug 9 11 View →
727625 0.5 ML vitamin K1 2 MG/ML Prefilled Syringe SCD Clinical drug 9 11 View →
855168 Levocetirizine dihydrochloride 0.5 MG/ML Oral Solution SCD Clinical drug 9 11 View →
866021 Cyproheptadine hydrochloride 0.4 MG/ML Oral Solution SCD Clinical drug 9 11 View →
1005834 Sulfacetamide sodium 100 MG/ML / sulfur 50 MG/ML Topical Cream SCD Clinical drug 9 10 View →
1039731 Camphor 0.04 MG/MG / menthol 0.1 MG/MG Topical Gel SCD Clinical drug 9 10 View →
1743938 10 ML dopamine hydrochloride 40 MG/ML Injection SCD Clinical drug 9 10 View →
1788932 Calcium carbonate 80 MG/ML / magnesium hydroxide 27 MG/ML / simethicone 8 MG/ML Oral Suspe... SCD Clinical drug 9 10 View →
1791612 Docusate sodium 50 MG / sennosides, USP 8.6 MG Oral Capsule SCD Clinical drug 9 10 View →
198434 Acetaminophen 120 MG Rectal Suppository SCD Clinical drug 9 10 View →
259081 12 HR aspirin 25 MG / dipyridamole 200 MG Extended Release Oral Capsule SCD Clinical drug 9 10 View →
2706644 0.8 ML adalimumab-ryvk 100 MG/ML Auto-Injector SCD Clinical drug 9 10 View →
315213 Sodium fluoride 2.2 MG Chewable Tablet SCD Clinical drug 9 10 View →
1000647 Pilocarpine hydrochloride 10 MG/ML Ophthalmic Solution SCD Clinical drug 9 9 View →
1000862 Pilocarpine hydrochloride 20 MG/ML Ophthalmic Solution SCD Clinical drug 9 9 View →
1000897 Pilocarpine hydrochloride 40 MG/ML Ophthalmic Solution SCD Clinical drug 9 9 View →
1046313 Benzocaine 60 MG/ML / ethanol 0.6 ML/ML Medicated Pad SCD Clinical drug 9 9 View →
1049633 Diphenhydramine hydrochloride 50 MG/ML Injectable Solution SCD Clinical drug 9 9 View →
1090443 Chlorpheniramine maleate 4 MG / phenylephrine hydrochloride 10 MG Oral Tablet SCD Clinical drug 9 9 View →
1090641 Triamcinolone acetonide 0.0005 MG/MG Topical Ointment SCD Clinical drug 9 9 View →
1098610 24 HR lamotrigine 300 MG Extended Release Oral Tablet [Lamictal] SBD Branded drug 9 9 View →
1116568 Acetaminophen 32.5 MG/ML / guaifenesin 20 MG/ML / phenylephrine hydrochloride 0.5 MG/ML Or... SCD Clinical drug 9 9 View →
1146692 24 HR lamotrigine 250 MG Extended Release Oral Tablet [Lamictal] SBD Branded drug 9 9 View →
1251008 Undecylenic acid 100 MG/ML Topical Solution SCD Clinical drug 9 9 View →
1307633 Bosutinib 500 MG Oral Tablet SCD Clinical drug 9 9 View →
1431971 24 HR tacrolimus 0.5 MG Extended Release Oral Capsule SCD Clinical drug 9 9 View →
1431980 24 HR tacrolimus 1 MG Extended Release Oral Capsule SCD Clinical drug 9 9 View →
1431985 24 HR tacrolimus 5 MG Extended Release Oral Capsule SCD Clinical drug 9 9 View →
1435624 Enalapril maleate 1 MG/ML Oral Solution SCD Clinical drug 9 9 View →
1437968 Cyclophosphamide 25 MG Oral Capsule SCD Clinical drug 9 9 View →
1437969 Cyclophosphamide 50 MG Oral Capsule SCD Clinical drug 9 9 View →
1442274 Lidocaine 5 MG/ML Topical Spray SCD Clinical drug 9 9 View →
1591961 0.3 ML methoxy polyethylene glycol-epoetin beta 0.167 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1591964 0.3 ML methoxy polyethylene glycol-epoetin beta 0.25 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1591967 0.3 ML methoxy polyethylene glycol-epoetin beta 0.333 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1591970 0.3 ML methoxy polyethylene glycol-epoetin beta 0.5 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1591973 0.3 ML methoxy polyethylene glycol-epoetin beta 0.667 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1591976 0.3 ML methoxy polyethylene glycol-epoetin beta 0.833 MG/ML Prefilled Syringe [Mircera] SBD Branded drug 9 9 View →
1649002 Salicylic acid 170 MG/ML Topical Cream SCD Clinical drug 9 9 View →
1665052 Cefazolin 500 MG Injection SCD Clinical drug 9 9 View →
1731350 Deferoxamine mesylate 500 MG Injection SCD Clinical drug 9 9 View →
1736477 100 ML eptifibatide 2 MG/ML Injection SCD Clinical drug 9 9 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.