Carbinoxamine Maleate 4 mg Tablet, 100-count — NDC 51991-333-01 (Billing 51991-0333-01)
by Breckenridge Pharmaceutical, Inc. · 100 TABLET in 1 BOTTLE, PLASTIC
This is a package of 100 tablets of Carbinoxamine Maleate 4 mg Tablet from Breckenridge Pharmaceutical, Inc., no longer marketed, no longer in the FDA NDC Directory; retail pharmacies pay about $0.4110 per tablet (NADAC). It is this product's only package size.
NDC 51991-0333-01
🏷️ FDA NDC (as labeled)
51991-333-01
billing pads the product segment with a zero
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Mar 13, 2024 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →
⚠️
Excluded from the active FDA NDC Directory.
The labeler reported this product as discontinued, so it is excluded from the active NDC Directory. The listing was last certified through Jun 2025. A label may still appear on DailyMed, but the NDC is no longer in the current FDA NDC Directory.
Search the FDA NDC Directory ↗
Identity & classification
Regulatory identifiers FDA, NLM and CMS codes for this package
FDA NDC (as labeled)
51991-333-01
Product NDC
51991-333
11-digit billing NDC
51991033301
NCPDP billing unit
EA — each (per item)
Application #
ANDA040442
Established class (EPC)
Histamine H1 Receptor Antagonists [MoA], Histamine-1 Receptor Antagonist
DEA schedule
Non-controlled
Marketing category
ANDA
Marketing status
Discontinued
FDA listing status
Discontinued by firm (certified through Jun 2025)
Route
ORAL
Dosage form
TABLET
Substance
CARBINOXAMINE MALEATE
Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification
GCN Seq No
011598
GCN
46170
HICL code
004483
Ingredient (HICL)
Carbinoxamine Maleate
HIC1 code
Z
Therapeutic class — broad (HIC1)
Body As A Whole
HIC2 code
Z2
Therapeutic class — intermediate (HIC2)
Antihistamines, Antiserotonins, Immunosuppressants
HIC3 code
Z2P
Therapeutic class — specific (HIC3)
Antihistamines - 1St Generation
AHFS code
04:04.00.00
AHFS class
First Generation Antihistamines
FDB label name
CARBINOXAMINE MALEATE 4 MG TAB
FDB brand name
Carbinoxamine Maleate
Legend status
F — Federal legend — prescription drug or device
Quick answers
- GSN (GCN sequence number): 011598
- GCN: 46170
- HICL (First Databank): 004483
- AHFS class code: 04:04.00.00
Why two NDCs?
The FDA registers this code as 51991-333-01 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 51991-0333-01. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
- RxNorm (NLM RxNav) · catalog refreshed Oct 1, 2026
- Medi-Span GPI (licensed)
- First Databank (licensed) · refreshed Oct 1, 2026
Clinical
Label name CARBINOXAMINE MALEATE 4 MG TAB Ingredient Carbinoxamine Maleate
📗 Our plain-language guide HelloPharmacist
- It relieves symptoms of allergies, such as allergic rhinitis, allergic eye irritation, hives, and dermatographism. It can also be added after a severe allergic reaction is controll...
- Yes, drowsiness is one of its most common effects, along with dizziness. Don't drive or operate machinery until you know how it affects you. Avoid alcohol and other sedating medici...
- Tablets and oral solution such as Carbzah and RyVent are taken on an empty stomach with water. Karbinal and the generic extended-release suspension are taken every 12 hours, and yo...
- Never to a child under 2, because deaths have been reported. For children 2 and older, your prescriber sets the dose carefully. Younger children may become excited rather than slee...
Patient education
Supplement & herbal interactions
Some supplements/herbs that may interact with Carbinoxamine Maleate — tap one for details:
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.
- MedlinePlus (NLM) · refreshed Oct 1, 2026
- FDA label on DailyMed · label index refreshed Oct 1, 2026
💬 Questions about carbinoxamine maleate?
Ask a pharmacist →
Ask a licensed pharmacist directly — free, answered by our team.
Pricing
A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.
| Price system | Per ea | Per package |
|---|---|---|
| Retail pharmacies payNADAC · weekly | $0.411 | $41.10 / 100 tablets |
| Medicaid paysCMS SDUD · 12 mo | $0.3356 | $33.56 / 100 tablets |
| Medicare drug plans payPart D · quarterly | No Part D plan price is available for this NDC in our data. | |
NADAC price history (per ea) — tap or hover for the price & month
▲ Up 26% over the last 14 months.
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.
- CMS NADAC weekly file · file of Feb 21, 2024
- CMS ASP pricing files · refreshed Sep 20, 2026
- CMS Medicaid State Drug Utilization Data · through Q2 2025
- CMS Part D plan pricing files · refreshed Sep 24, 2026
- VA National Acquisition Center price file
Packaging — all sizes for this product
| Package NDC | Description | Marketing start | Marketing end | Status |
|---|---|---|---|---|
| 51991-0333-01 You're viewing this Main listing | 100 TABLET in 1 BOTTLE, PLASTIC | 2012-12-10 | — | Discontinued by firm |
Therapeutic equivalents
| Product | Labeler | Pack | NADAC/unit | TE | Status | Price vs. this |
|---|---|---|---|---|---|---|
| Carbinoxamine Maleate 4 mg 44523-0825-01 | Biocomp | 100 tablets | $0.398 | — | Availability likely | save 3% |
| Carbinoxamine Maleate 4 mg 64950-0211-01 | Genus | 100 tablets | $0.398 | — | Availability likely | save 3% |
| Carbinoxamine Maleate 4 mgthis 51991-0333-01 | Breckenridge | 100 tablets | $0.411 | — | Discontinued | — |
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- FDA Orange Book · refreshed Oct 3, 2026
- CMS NADAC weekly file · file of Feb 21, 2024
Availability & generic status
📍
2026
Currently FDA-listed
listed with the FDA
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug
This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.
Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.
- FDA Orange Book · refreshed Oct 3, 2026
Inactive Ingredients / Excipients
Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.
Loading inactive ingredients from the official FDA label in the background. No external source is being called by this page request.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured
IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.- FDA label on DailyMed · label index refreshed Oct 1, 2026
- FDA openFDA NDC Directory · synced Oct 1, 2026
Inactive ingredient FAQ
Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.
Manufacturer & labeler
LabelerBreckenridge Pharmaceutical, Inc.
Application holderZETA PHARMACEUTICALS LLC
FDA applicationANDA040442 (ANDA)
Labeler code51991
Product typeHuman Prescription Drug
Portfolio71 products on file
The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.
- FDA openFDA NDC Directory · synced Oct 1, 2026
- Drugs@FDA
Full prescribing information FDA SPL
The complete FDA label for this product — the official prescribing information, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
📄 FDA label ▾
No FDA label is on file for this product yet. Labels load from openFDA / DailyMed and refresh weekly.
No label section mentions that — try another word, or open the full label on DailyMed below.
Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA.
Medicaid utilization & spend
📍 This exact package only: Medicaid data is reported per full 11-digit NDC — labeler, product and pack size — so every number here is for this package alone, not the drug overall. Other pack sizes report separately.
💊 Pharmacy benefit only: These are Medicaid outpatient pharmacy claims, billed by NDC. They exclude the medical benefit — clinic- or hospital-administered drugs billed under HCPCS J-codes — so drugs used mostly that way (e.g. Avastin, Lucentis, Keytruda) can look low or missing here. That’s expected, not an error.
📅 Q1 2025 – Q2 2025 · 2 quarters of data
ⓘ The newest quarter is usually incomplete when first published; states restate recent quarters in later CMS releases, so the latest figures typically revise upward. State coverage-policy changes can also shift quarter-to-quarter totals.
Prescriptions last 4 qtrs
199
Units reimbursed last 4 qtrs
15.6K
Gross reimbursed last 4 qtrs
$5.2K
Avg / prescription
$26.31
Avg / unit
$0.3356
Latest quarter Q2 2025
115Rx
Medicaid pays / ea
$0.3356
gross reimbursed
vs
NADAC / ea
$0.4110
acquisition cost
=
Spread
−$0.0754
-18% vs cost
What Medicaid paid per ea (before rebates; includes the pharmacy’s dispensing fee) compared with NADAC — the average price pharmacies pay to buy the drug. A positive spread means Medicaid reimbursed more than the purchase price, before manufacturer rebates.
Fee-for-service vs managed care ⓘ
Fee-for-service · 25 Rx Managed care · 174 Rx
State Medicaid map
Units reimbursed · per 100k residents
8.748.2
gray = no data reported ⓘ
Colors are per 100,000 residents, so big states don’t automatically dominate. Tap or hover a state for its actual totals.
Tap or hover a state
…for its Medicaid breakdown
Prescriptions—
Units—
Reimbursed—
🏆 Top states by units · per 100k residents
National units — by quarter
💵 About the dollar figures: “reimbursed” is what Medicaid paid pharmacies before confidential manufacturer rebates, so the program’s real net cost is lower than these numbers. Fee-for-service and managed-care claims are combined unless split above. Source: CMS State Drug Utilization Data; per-100k rates use 2023 Census population estimates.
Medicare Part D spend CMS · PART D · 2026 (Q1)
Medicare Part D (outpatient prescription) spending for Carbinoxamine Maleate — the program that covers self-administered drugs. 5 manufacturers.
⚠️ Drug-level data: CMS publishes Part D spending by drug, not by NDC — these figures combine every manufacturer, strength and package size sold under the name Carbinoxamine Maleate. That’s a different level of aggregation than the Medicaid card above, which is specific to this exact 11-digit NDC (pack size included), so the two aren’t directly comparable.
Period
Total Part D spend
$1.09M
Claims incl. refills
1.8K
Beneficiaries
1.1K
Spend / beneficiary
$949.93
Spend / claim
$621.00
Trend by period
💵 About the dollar figures: spending is what Part D plans paid before confidential manufacturer rebates, so the program’s real net cost is lower. A blank patient count means fewer than 11 people — CMS hides counts that small to protect privacy. Source: CMS Medicare Quarterly Part D Spending by Drug (data.cms.gov), updated quarterly.
About this NDC listing & data coverage
Finished prescription product
No longer marketed (per FDA listing data)
What data is (and isn’t) available for this NDC — tap to expand
| NDC identity (package / product / labeler codes) | ✓ Available |
| Labeler | ✓ Available |
| Product & package description | ✓ Available |
| Marketing category & status | ✓ Available |
| Active ingredient / dosage form / route | ✓ Available |
| FDA label (SPL via DailyMed) | — Not published for this NDC No structured label is linked to this listing in DailyMed/openFDA. |
| Package photos | — Not published for this NDC No photo available yet for this listing. |
| Inactive ingredients (structured) | — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available. |
| NADAC pharmacy acquisition price (CMS) | ✓ Available |
| Orange Book / therapeutic-equivalence data | — Not published for this NDC Applies only to products approved under an NDA/ANDA; many listings are out of scope. |
| HCPCS J-code billing crosswalk | — Not published for this NDC Most self-administered / retail products have no J-code — that is normal. |
| Medicaid utilization (CMS SDUD) | ✓ Available |
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.
Questions about this listing
Why is there no full label on this page?
No structured FDA label (SPL) is currently linked to this NDC in DailyMed/openFDA. That can happen with older listings, certain OTC and repackaged products, and recently updated listings whose label has not yet propagated. The listing itself is still valid — this page shows everything the public feeds provide for this package.
What does the discontinued status mean for this NDC?
The labeler reported a marketing end date (or the listing was delisted), so this specific package is no longer actively marketed. Remaining stock may still be dispensed for a time, and the NDC stays valid for historical records and claims — but data feeds (pricing, labeling) typically stop updating for it. Other package sizes or other manufacturers' versions of the same medication may still be marketed — see the equivalents section where available.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Who lists this product with the FDA?
Breckenridge Pharmaceutical, Inc. is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
For educational and professional reference only — not medical advice. Pricing reflects published
NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.