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Chlorzoxazone 750 mg Tablet, 20-count — NDC 85766-0284-20 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

Chlorzoxazone 750 mg Tablet, 20-count — NDC 85766-284-20 (Billing 85766-0284-20)

by Sportpharm LLC · 20 TABLET in 1 BOTTLE

This is a package of 20 tablets of Chlorzoxazone 750 mg Tablet from Sportpharm LLC, marketed since Aug 2023 and currently FDA-listed.

NDC 85766-0284-20
🏷️ FDA NDC (as labeled) 85766-284-20 billing pads the product segment with a zero
This package
Contains20-count Pack sizes8 compare ↓
Product page 85766-0284-01 Also comes in: 10 tablets 85766-284-10 14 tablets 85766-284-14 28 tablets 85766-284-28 30 tablets 85766-284-30 60 tablets 85766-284-60 90 tablets 85766-284-90 100 tablets 85766-284-01
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Oct 8, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
📋 All sources & update times →

This page is curated, coded, and maintained by

Compiled from public FDA, CMS, DailyMed, NADAC, and related drug data sources. Editorial policy

NDC database record

One package, one record: these facts belong to NDC 85766-284-20 alone.

Record
FDA NDC Directory package listing · Human prescription drug
Code segments
85766 labeler · 284 product · 20 package
Package marketed since
Sep 29, 2026
Sample package
No — commercial package
Listing certified through
Dec 31, 2027
Barcode (UPC-A, from the NDC)
3 8576628420 9
FDA record last changed
Oct 8, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 85766-284-20
Product NDC 85766-284
11-digit billing NDC 85766028420
Application # ANDA089853
SPL Set ID a21c6113-cf80-4bdd-bfe5-8cfd02f107fc
Established class (EPC) Muscle Relaxant
Physiologic effect Centrally-mediated Muscle Relaxation
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2023-08-17
Route ORAL
Dosage form TABLET
Substance CHLORZOXAZONE
TE code (Orange Book) AB · RLD · RS
Why two NDCs? The FDA registers this code as 85766-284-20 — 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 → 85766-0284-20. 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.

Clinical

📗 Our plain-language guide HelloPharmacist
  • It helps relieve discomfort from sudden, painful muscle and bone conditions. It is meant to be used along with rest, physical therapy and other measures, not by itself.
  • You take it by mouth, usually three or four times a day. Your doctor may adjust the amount depending on how you respond, and it can often be lowered as you get better. Follow the d...
  • Most people tolerate it well. Some feel drowsy, dizzy, lightheaded or a bit unwell, and a few feel over-stimulated. Your urine may change color, which isn't known to be a problem.
  • Rarely, it can harm the liver. Stop the medicine and call if you have fever, rash, nausea, vomiting, unusual tiredness, upper right belly pain, dark urine or yellow skin or eyes. S...
📖 Read our full Chlorzoxazone guide →
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.

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 systemPer eachPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Try another pack size: 10 tablets 14 tablets 28 tablets 30 tablets 60 tablets 90 tablets 100 tablets
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.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
85766-0284-01 85766-284-01 Main listing 100 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-10 85766-284-10 10 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-14 85766-284-14 14 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-20 You're viewing this 20 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-28 85766-284-28 28 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-30 85766-284-30 30 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-60 85766-284-60 60 TABLET in 1 BOTTLE 2026-09-29 — Active
85766-0284-90 85766-284-90 90 TABLET in 1 BOTTLE 2026-09-29 — Active

You're viewing one of 8 pack sizes for this product.

Pack size FAQ

What quantity is in this package?
This is a 20-count package — 20 tablet in 1 bottle.
How does this package differ from NDC 85766-0284-10?
Both are Chlorzoxazone 750 mg Tablet — the drug itself is identical. This page's package is the 20-count one, while NDC 85766-0284-10 is the 10 tablets package.
What NDC number is used to bill for this package of Chlorzoxazone 750 mg Tablet?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Chlorzoxazone 750 mg 16571-0727-01 Rising 100 tablets $0.675 AB Availability likely —
Chlorzoxazone 750 mg 59651-0307-01 Aurobindo 100 tablets $0.675 AB Availability likely —
Chlorzoxazone 750 mg 00254-2005-01 Par 100 tablets $0.675 AB Availability likely —
Chlorzoxazone 750 mg 80425-0526-01 Advanced 30 tablets — AB FDA listed —
Chlorzoxazone 750 mgthis 85766-0284-20 Sportpharm 20 tablets — AB FDA listed —
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.

Availability & generic status

🏛️
2023
On the market since
Aug 2023
📍
2026
Currently FDA-listed
3 years listed
🔓
·
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.

What it looks like

Color white / orange
ShapeCapsule
ImprintN;750
Size20 mm
ScoringScore: 3
One label can cover several strengths, so colors may be combined — always confirm a loose pill against the dispensed prescription label or a pharmacist.
Where does this data come from?
Physical description (imprint, shape, color, scoring, coating) from this product’s FDA Structured Product Labeling (SPL), mirrored from DailyMed / openFDA.

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.

🧪 Avoiding an ingredient? See Chlorzoxazone inactive ingredients by manufacturer: every current product's list side by side, so you can ask your pharmacy for the version that does not list it.

💡 Tap an ingredient (hover on desktop) to see what it is and why it’s used.

  • UNII M28OL1HH48
    Croscarmellose sodium is a plant-based substance derived from cellulose. It acts as a disintegrant, helping tablets and capsules break down quickly in the digestive system so the medicine can be absorbed.
  • UNII 656HXR6YXN
    A combination of two additives: docusate sodium softens the medicine's texture to help it break apart, while sodium benzoate acts as a preservative to prevent spoilage and maintain shelf life.
  • UNII EWQ57Q8I5X
    Lactose monohydrate is a natural sugar derived from milk. It serves as a filler and binder in tablets and capsules, helping create the proper size, texture, and consistency of the medicine.
  • UNII 70097M6I30
    Magnesium stearate is a salt made from magnesium and stearic acid, a fatty substance. It's used in tablets and capsules as a lubricant and glidant to help ingredients flow smoothly during manufacturing and prevent sticking.
  • UNII OP1R32D61U
    Microcrystalline cellulose is a purified form of cellulose, a natural fiber from plant sources. It acts as a binder and filler in tablets and capsules, helping hold ingredients together and give the medicine its shape and size.
  • UNII ETJ7Z6XBU4
    Silicon dioxide is a naturally occurring mineral used as a glidant and anti-caking agent. It helps powder ingredients flow smoothly and prevents clumping during manufacturing and storage.
  • UNII O8232NY3SJ
    A plant-based carbohydrate derived from corn kernels. It acts as a filler to add bulk, a binder to hold ingredients together, and a disintegrant to help the tablet break apart in your stomach for absorption.

7 inactive ingredients listed in the exact product block matched to this NDC.

Where does this data come from?
Data sourced from official FDA Structured Product Labeling (SPL) via DailyMed — ingredient classCode="IACT" elements from the exact product block matched by this NDC. Label-section narrative from DailyMed / the openFDA label index is shown separately when available.

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

LabelerSportpharm LLC
Application holderAUROBINDO PHARMA LTD
FDA applicationANDA089853 (ANDA)
Labeler code85766
First marketedAug 2023
Product typeHuman Prescription Drug
Portfolio278 products on file

More NDCs from Sportpharm LLC labeler code 85766

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.

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
📄 FDA label 19 words ▾

No FDA label is on file for this product yet. Labels load from openFDA / DailyMed and refresh weekly.

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Medicare Part D spend CMS · PART D · 2026 (Q1)

Medicare Part D (outpatient prescription) spending for Chlorzoxazone — the program that covers self-administered drugs. 10 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 Chlorzoxazone. 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
$6.39M
Claims incl. refills
16.8K
Beneficiaries
10K
Spend / beneficiary
$639.03
Spend / claim
$380.55
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
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) ✓ Available
Package photos ✓ Available
Inactive ingredients (structured) ✓ Available
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data ✓ Available
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) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“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 price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
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.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Sportpharm LLC. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 7 other package presentations of this same product, including 10 tablets (85766-0284-10), 14 tablets (85766-0284-14), 28 tablets (85766-0284-28). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Sportpharm LLC 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.
← 85766-0283-01 · Sportpharm 85766-0285-01 · Sportpharm →
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.