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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
2735822 Sildenafil 25 MG Oral Film SCD Clinical drug 8 31 View →
2735825 Sildenafil 50 MG Oral Film SCD Clinical drug 8 31 View →
2735829 Sildenafil 75 MG Oral Film SCD Clinical drug 8 31 View →
860695 24 HR galantamine hydrobromide 16 MG Extended Release Oral Capsule SCD Clinical drug 8 29 View →
860707 24 HR galantamine hydrobromide 24 MG Extended Release Oral Capsule SCD Clinical drug 8 29 View →
860715 24 HR galantamine hydrobromide 8 MG Extended Release Oral Capsule SCD Clinical drug 8 29 View →
645617 Cephalexin 333 MG Oral Capsule SCD Clinical drug 8 28 View →
900434 Ibuprofen 200 MG Oral Tablet [Addaprin] SBD Branded drug 8 28 View →
900438 Ibuprofen 200 MG Oral Tablet [Ultraprin] SBD Branded drug 8 28 View →
1098143 24 HR niacin 750 MG Extended Release Oral Tablet SCD Clinical drug 8 26 View →
1797883 Azelastine hydrochloride 0.206 MG/ACTUAT Metered Dose Nasal Spray SCD Clinical drug 8 26 View →
1734086 20 ML ropivacaine hydrochloride 10 MG/ML Injection [Naropin] SBD Branded drug 8 25 View →
1734091 10 ML ropivacaine hydrochloride 10 MG/ML Injection [Naropin] SBD Branded drug 8 25 View →
861208 Brimonidine tartrate 1.5 MG/ML Ophthalmic Solution SCD Clinical drug 8 25 View →
311382 Loteprednol etabonate 5 MG/ML Ophthalmic Suspension SCD Clinical drug 8 24 View →
313189 Tacrolimus 0.0003 MG/MG Topical Ointment SCD Clinical drug 8 24 View →
2706315 Thyroid (USP) 180 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706317 Thyroid (USP) 30 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706321 Thyroid (USP) 45 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706323 Thyroid (USP) 60 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706327 Thyroid (USP) 75 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706329 Thyroid (USP) 90 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706331 Thyroid (USP) 120 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
2706333 Thyroid (USP) 15 MG Oral Tablet [Renthyroid] SBD Branded drug 8 23 View →
312132 Oxaprozin 600 MG Oral Tablet SCD Clinical drug 8 23 View →
1089990 Benzalkonium chloride 13 MG/ML Medicated Liquid Soap SCD Clinical drug 8 22 View →
2588062 Rivaroxaban 1 MG/ML Oral Suspension SCD Clinical drug 8 22 View →
1046787 Atropine sulfate 0.00388 MG/ML / hyoscyamine sulfate 0.0207 MG/ML / phenobarbital 3.24 MG/... SCD Clinical drug 8 21 View →
995232 Hydroxyzine pamoate 100 MG Oral Capsule SCD Clinical drug 8 21 View →
103457 Fluocinonide 0.0005 MG/MG Topical Ointment SCD Clinical drug 8 20 View →
1046310 Benzalkonium chloride 1.2 MG/ML Topical Foam SCD Clinical drug 8 20 View →
309081 Cefprozil 50 MG/ML Oral Suspension SCD Clinical drug 8 20 View →
309917 Dimethicone 15 MG/ML Topical Cream SCD Clinical drug 8 20 View →
896983 Labetalol hydrochloride 400 MG Oral Tablet SCD Clinical drug 8 20 View →
1098199 Benzalkonium chloride 0.0013 MG/MG Topical Gel SCD Clinical drug 8 19 View →
1370754 Hydrocortisone valerate 2 MG/ML Topical Cream SCD Clinical drug 8 19 View →
861200 Brimonidine tartrate 2 MG/ML Ophthalmic Solution SCD Clinical drug 8 18 View →
1101534 Acetaminophen 500 MG / phenylephrine hydrochloride 5 MG Oral Tablet SCD Clinical drug 8 17 View →
2609246 Famotidine 20 MG Oral Tablet [Zantac Reformulated Aug 2022] SBD Branded drug 8 17 View →
409823 Cefixime 400 MG Oral Capsule SCD Clinical drug 8 17 View →
1359117 {24 (ethinyl estradiol 0.02 MG / norethindrone acetate 1 MG Oral Tablet) / 4 (ferrous fuma... GPCK Generic pack 8 16 View →
1368410 Alogliptin 12.5 MG / pioglitazone 30 MG Oral Tablet SCD Clinical drug 8 16 View →
1368424 Alogliptin 25 MG / pioglitazone 15 MG Oral Tablet SCD Clinical drug 8 16 View →
1368431 Alogliptin 25 MG / pioglitazone 30 MG Oral Tablet SCD Clinical drug 8 16 View →
1368438 Alogliptin 25 MG / pioglitazone 45 MG Oral Tablet SCD Clinical drug 8 16 View →
1536477 Acetaminophen 250 MG / chlorpheniramine maleate 2 MG / dextromethorphan hydrobromide 10 MG... SCD Clinical drug 8 16 View →
861769 Metformin hydrochloride 1000 MG / sitagliptin 50 MG Oral Tablet SCD Clinical drug 8 16 View →
861819 Metformin hydrochloride 500 MG / sitagliptin 50 MG Oral Tablet SCD Clinical drug 8 16 View →
996824 Methylergonovine maleate 0.2 MG Oral Tablet SCD Clinical drug 8 16 View →
105171 Cefadroxil 100 MG/ML Oral Suspension SCD Clinical drug 8 15 View →
1537029 Aspirin 325 MG / chlorpheniramine maleate 2 MG / dextromethorphan hydrobromide 10 MG / phe... SCD Clinical drug 8 15 View →
1860127 Abuse-Deterrent 12 HR oxycodone hydrochloride 60 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860129 Abuse-Deterrent 12 HR oxycodone hydrochloride 20 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860137 Abuse-Deterrent 12 HR oxycodone hydrochloride 40 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860148 Abuse-Deterrent 12 HR oxycodone hydrochloride 80 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860151 Abuse-Deterrent 12 HR oxycodone hydrochloride 30 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860154 Abuse-Deterrent 12 HR oxycodone hydrochloride 15 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
1860157 Abuse-Deterrent 12 HR oxycodone hydrochloride 10 MG Extended Release Oral Tablet SCD Clinical drug 8 15 View →
309048 Cefadroxil 50 MG/ML Oral Suspension SCD Clinical drug 8 15 View →
722111 Adapalene 0.003 MG/MG Topical Gel SCD Clinical drug 8 15 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.