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G-ZYNCOF Dextromethorphan HBr and Guaifenesin 20 mg/5mL; 400 mg/5mL Syrup, 473 mL — NDC 52083-0600-16 package photo
Label image from the product's FDA listing (DailyMed) — may show a different pack size or an older label revision.

G-ZYNCOF Dextromethorphan HBr and Guaifenesin 20 mg/5mL; 400 mg/5mL Syrup, 473 mL — NDC 52083-600-16 (Billing 52083-0600-16)

by Kramer Novis · 473 mL in 1 BOTTLE, PLASTIC

This is a package of 473 mL of G-ZYNCOF Dextromethorphan HBr and Guaifenesin 20 mg/5mL; 400 mg/5mL Syrup from Kramer Novis, marketed since Dec 2012 and currently FDA-listed. It is this product's only package size.

NDC 52083-0600-16
🏷️ FDA NDC (as labeled) 52083-600-16 billing pads the product segment with a zero
OTC On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 8, 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 52083-600-16 alone.

Record
FDA NDC Directory package listing · Human OTC drug
Code segments
52083 labeler · 600 product · 16 package
Package marketed since
Dec 3, 2012
Sample package
No — commercial package
Listing certified through
Dec 31, 2026
Billing quantity
473 mL per package
Barcode (UPC)
0352083600166
FDA record last changed
Oct 8, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 52083-600-16
Product NDC 52083-600
11-digit billing NDC 52083060016
NCPDP billing unit ML — per mL (volume)
RxCUI 1113368
UNII 9D2RTI9KYH, 495W7451VQ
UPC 0352083600166
Application # M012
SPL Set ID c1aa7060-0f32-4ea1-8e2e-1aa131bd55fc
Established class (EPC) Expectorant
Physiologic effect Decreased Respiratory Secretion Viscosity; Increased Respiratory Secretions
DEA schedule Non-controlled
Marketing category OTC MONOGRAPH DRUG
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2012-12-03
Route ORAL
Dosage form SYRUP
Substance DEXTROMETHORPHAN HYDROBROMIDE; GUAIFENESIN

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GPI-14 43997002521280
GPI class G-Zyncof
GCN Seq No 067618
GCN 30209
HICL code 000223
Ingredient (HICL) Guaifenesin/Dextromethorphan
HIC1 code B
Therapeutic class — broad (HIC1) Respiratory System
HIC2 code B3
Therapeutic class — intermediate (HIC2) Drugs Affecting Primarily The Trachea And Bronchi
HIC3 code B3T
Therapeutic class — specific (HIC3) Non-Opioid Antitussive And Expectorant Combination
AHFS code 48:08.00.00
AHFS class Antitussives
FDB label name G-ZYNCOF 20-400 MG/5 ML LIQUID
FDB brand name G-Zyncof
Legend status O — Over-the-counter (OTC) drug or device
Quick answers
  • GSN (GCN sequence number): 067618
  • GCN: 30209
  • GPI-14 (Medi-Span): 43997002521280
  • HICL (First Databank): 000223
  • AHFS class code: 48:08.00.00
  • RxCUI (RxNorm): 1113368
Why two NDCs? The FDA registers this code as 52083-600-16 — 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 → 52083-0600-16. 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.

RxNorm drug class

This medicine belongs to the Uncompetitive N-methyl-D-aspartate Receptor Antagonist class.

Pharmacologic class Uncompetitive N-methyl-D-aspartate Receptor Antagonist, Sigma-1 Agonist
Drug family (ATC) Other antidepressants, Opium alkaloids and derivatives
How it works Uncompetitive NMDA Receptor Antagonists, Sigma-1 Receptor Agonists
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name G-ZYNCOF 20-400 MG/5 ML LIQUID Ingredient Guaifenesin/Dextromethorphan
📗 Our plain-language guide HelloPharmacist
  • It helps loosen mucus and makes coughs more productive. It also temporarily eases cough from minor throat and bronchial irritation, like with a cold or inhaled irritants.
  • Swallow them whole with a full glass of water. Don’t crush, chew or break them. You can take them with or without food, about every 12 hours as your label directs.
  • How do I take the extended-release tablets?
  • The extended-release tablets are not for children under 12. Some liquid products are made for children, so check that product’s label and ask me if you’re unsure.
📖 Read our full Dextromethorphan / Guaifenesin guide →

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →
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 mLPer 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.
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
52083-0600-16 You're viewing this Main listing 473 mL in 1 BOTTLE, PLASTIC 2012-12-03 — Active

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Bio-Z-Cough 20 mg/5mL; 400 mg/5mL 45737-0251-16 Advanced 473 ml — — FDA listed —
Zyncof 20 mg/5mL; 400 mg/5mL 52083-0400-01 Kramer 30 ml — — FDA listed —
G-Zyncof 20 mg/5mL; 400 mg/5mLthis 52083-0600-16 Kramer 473 ml — — FDA listed —
About this product: other versions of the same ingredient, strength and form are listed above, least expensive first, with FDA equivalence ratings where available.
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

🏛️
2012
On the market since
Dec 2012
📍
2026
Currently FDA-listed
14 years listed
🔒
·
No generic listed yet
brand only
ℹ️No FDA-approved generic found

We did not find an FDA-approved generic match for this exact strength, form and route.

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.

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 Dextromethorphan / Guaifenesin 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 2968PHW8QP
    A weak organic acid derived from citrus fruits or made through fermentation. It works as a buffer to control pH, a preservative to extend shelf life, and a flavoring agent in medications.
  • UNII 2R04ONI662
    Eucalyptus oil is a fragrant liquid extracted from eucalyptus tree leaves. It's used in medicines as a flavor, scent, or soothing agent in topical products and cough preparations.
  • UNII PDC6A3C0OX
    Glycerin is a clear, thick liquid derived from plant oils or fats. It acts as a humectant to retain moisture, a sweetener, and a solvent in medications.
  • UNII L7T10EIP3A
    A cooling compound from mint plants used as a flavoring agent and to create a fresh sensation in medicines. It helps mask bitter tastes and improve how the product feels in the mouth.
  • UNII A2I8C7HI9T
    Methylparaben is a preservative derived from benzoic acid that prevents growth of bacteria, fungi, and mold in medicines. It extends the product's shelf life and maintains safety during storage.
  • UNII 6DC9Q167V3
    Propylene glycol is a clear liquid derived from petroleum or vegetable sources. It acts as a solvent, humectant, and preservative in medicines, helping dissolve active ingredients and maintain product stability.
  • UNII Z8IX2SC1OH
    Propylparaben is a chemical preservative used to prevent bacterial and fungal growth in medicines and personal care products. It helps extend shelf life and maintain product safety during storage.
  • UNII 1Q73Q2JULR
    Sodium citrate is a salt derived from citric acid. It works as a buffer to maintain the medicine's pH level and may also help improve taste or act as a preservative in the formulation.
  • UNII 96K6UQ3ZD4
    Sucralose is a synthetic sweetener made from sugar. It's added to medicines to improve taste without adding calories, helping make bitter or unpleasant-tasting drugs easier to take.
  • UNII 059QF0KO0R
    Water is a liquid solvent that dissolves and mixes ingredients together in liquid medicines, syrups, and injections. It helps distribute the active drug evenly throughout the product.

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

The official label also statescitric acid, eucalyptus oil, flavors, glycerin, menthol, methylparaben, propylene glycol, propylparaben, purified water, sodium citrate, sucralose

Label-section wording can be broader than the structured product block and may mention additional formulation ingredients.

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

LabelerKramer Novis
FDA applicationM012 (OTC MONOGRAPH DRUG)
Labeler code52083
First marketedDec 2012
Product typeHuman Otc Drug
Portfolio26 products on file

More NDCs from Kramer Novis labeler code 52083

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 label — Drug Facts FDA SPL

The complete FDA label for this product — the official Drug Facts labeling, verbatim, section by section. Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration ⚠️ Warnings 📦 Storage and Handling 🧪 Active Ingredient 🧪 Inactive Ingredients 🎯 Purpose 📄 Keep Out of Reach of Children 📄 Questions or Comments 📄 Recent Major Changes 📄 Package Label / Principal Display Panel
🎯 Indications and Usage 31 words ▾

Uses • temporarily relieves cough due to minor throat and bronchial irritation as may occur with a cold • helps loosen phlegm (mucus) and thin bronchial secretions to drain bronchial tubes

⏱️ Dosage and Administration 45 words ▾

​ Directions • do not take more than 6 doses in any 24-hour period. • mL = milliliter age dose Adults and children 12 years of age and over 1 teaspoon (5 mL) every 4 hours Children under 12 years of age do not use

⚠️ Warnings 165 words ▾

Warnings • Do not use if you are now taking a prescription monoamine oxidase inhibitor (MAOI) (certain drugs for depression, psychiatric or emotional conditions, or Parkinson’s disease), or for 2 weeks after stopping the MAOI drug. If you do not know if your prescription drug contains an MAOI, ask a doctor or pharmacist before taking this product. Ask a doctor before use if you have • cough that occurs with too much phlegm (mucus) • cough that lasts or is chronic such as occurs with smoking, asthma, chronic bronchitis, or emphysema.

When using this product, do not use more than directed. Stop use and ask a doctor if cough lasts more than 7 days, comes back, or is accompanied by fever, rash, or persistent headache. These could be signs of a serious condition.

If pregnant or breast-feeding , ask a health professional before use. Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

📦 Storage and Handling 32 words ▾

Other information • Tamper evident feature: Do not use if printed security seal is torn, broken or missing • Store at controlled room temperature 15-30°C (59-86°F) • Avoid excessive heat or humidity.

🧪 Active Ingredient 15 words ▾

Active ingredients (in each 5 mL, 1 teaspoon) Dextromethorphan HBr, 20 mg Guaifenesin, 400 mg

🧪 Inactive Ingredients 18 words ▾

Inactive ingredients citric acid, eucalyptus oil, flavors, glycerin, menthol, methylparaben, propylene glycol, propylparaben, purified water, sodium citrate, sucralose

🎯 Purpose 4 words ▾

Purposes Cough suppressant Expectorant

📄 Keep Out of Reach of Children 21 words ▾

Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.

📄 Questions or Comments 22 words ▾

Questions or comments? 1-787-767-2072 You may also report serious side effects to this phone number. Call weekdays from 8AM to 4PM AST

📄 Recent Major Changes 47 words ▾

Directions: (The following changes were made) • mL=milliliter • A table was included with the dosage instructions according to age: age dose Adults and children 12 years of age and over 1 teaspoon (5 mL) every 4 hours Children under 12 years of age do not use

📄 Package Label / Principal Display Panel 2 words ▾

Packaging G-ZYNCOF

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

Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for G-ZYNCOF (this brand).

Top reported reactions

Cardiac Arrest5
Respiratory Arrest5
Intentional Drug Misuse2
Arrhythmia Supraventricular1
Completed Suicide1
Death1
Device Information Output Issue1

Reporter sex

0 reports

Serious outcomes

Death6
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

About this NDC listing & data coverage

Over-the-counter (OTC) 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 — 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) — 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

Is this NDC FDA-approved?
An NDC listing does not by itself establish FDA approval — the NDC Directory records that a product is listed with FDA, not that it was reviewed and approved. This listing's marketing category is "Otc Monograph Drug". Products approved under an application carry an NDA, ANDA, or BLA number.
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 Kramer Novis. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Kramer Novis 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 an over-the-counter product, so it does not require a prescription. Follow the package directions, and ask your pharmacist if you are unsure whether it is right for you.
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.
← 52083-0483-90 · Kramer 52083-0624-16 · Kramer →
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.