Home › NDC Lookup › Ingredients › Hepatitis A Vaccine, Inactivated › 00006-4831-41
VAQTA hepatitis A vaccine, inactivated 326F ANTIGEN (FORMALDEHYDE INACTIVATED) 25 [iU]/.5mL Injection, Suspension, 10 vials — NDC 00006-4831-41 package photo

VAQTA hepatitis A vaccine, inactivated 326F ANTIGEN (FORMALDEHYDE INACTIVATED) 25 [iU]/.5mL Injection, Suspension, 10 vials

by Merck Sharp & Dohme LLC · 10 VIAL, SINGLE-DOSE in 1 CARTON (0006-4831-41) / .5 mL in 1 VIAL, SINGLE-DOSE (0006-4831-01)
NDC 00006-4831-41
🏷️ FDA NDC (as labeled) 0006-4831-41 billing pads the labeler segment with a zero
Brand On market Non-controlled
🗂️ Data synced Sep 13, 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

🆔 Identity & classification

FDA NDC (as labeled) 0006-4831-41
Product NDC 0006-4831
11-digit billing NDC 00006483141
NCPDP billing unit ML — per mL (volume)
Application # BLA103606
SPL Set ID 89191ae9-7f2b-4206-8397-bf7fce3436ac
Established class (EPC) Inactivated Hepatitis A Virus Vaccine; Vaccines
Physiologic effect Actively Acquired Immunity
Chemical class Hepatitis A Vaccines; Inactivated
DEA schedule Non-controlled
Marketing category BLA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 1996-03-29
Route INTRAMUSCULAR
Dosage form INJECTION, SUSPENSION
Substance HEPATITIS A VIRUS STRAIN CR 326F ANTIGEN (FORMALDEHYDE INACTIVATED)
GPI-14 17100008001860
GPI class Vaqta
GCN Seq No 063909
GCN 99621
HICL code 034417
Ingredient (HICL) Hepatitis A Virus Vaccine/Pf
HIC1 code W
Therapeutic class — broad (HIC1) Anti-Infecting Agents
HIC2 code W7
Therapeutic class — intermediate (HIC2) Biologicals
HIC3 code W7B
Therapeutic class — specific (HIC3) Viral/Tumorigenic Vaccines
AHFS code 80:12.00.00
AHFS class Vaccines
FDB label name VAQTA 25 UNITS/0.5 ML VIAL
FDB brand name Vaqta
Legend status F — Federal legend — prescription drug or device
Biologic (Purple Book) 351(a)
Why two NDCs? The FDA registers this code as 0006-4831-41 — a 4-4-2 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 labeler segment → 00006-4831-41. 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.

🏭 Manufacturer & labeler

LabelerMerck Sharp & Dohme LLC
FDA applicationBLA103606 (BLA)
Labeler code00006
First marketedMar 1996
Product typeVaccine
Portfolio112 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.

🩺 Clinical

Label name VAQTA 25 UNITS/0.5 ML VIAL Ingredient Hepatitis A Virus Vaccine/Pf
📖 What it is MedlinePlus · NLM

Why get vaccinated? Hepatitis A vaccine may prevent hepatitis A disease that may occur with infection due to the hepatitis A virus. Infection with the hepatitis A virus can cause the following: an infection of the liver that may or may not have symptoms (nausea, vomiting, dark urine, clay-colored stools, tiredness, fever, loss of appetite, yellow skin or eyes). The virus is spread through eating or drinking contaminated food or drink or by contact with infected people. Hepatitis A vaccine does not contain active virus. It works by triggering the body to make antibodies against the bacteria t...

Read the full MedlinePlus article ↗

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.

💊 What it looks like

Color White
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.

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

  • 35 ug / 0.5 mL UNII 91MBZ8H3QO
    Sodium borate is an inorganic salt compound used in medicines as a buffer to help maintain a stable pH level, and sometimes as a mild preservative or cleansing agent in topical formulations.
  • UNII 451W47IQ8X
    Sodium chloride is common table salt. It's used in medicines as a buffer to maintain proper pH, as a filler to add bulk, or to adjust the osmotic balance in liquid formulations.
  • 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.

3 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.

💲 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 · Q2 2026 $80.79 $403.96 / 5 ml
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.

🔁 Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Vaqta 326F ANTIGEN (FORMALDEHYDE INACTIVATED) 25 [iU]/.5mL 00006-4095-02 Merck 10 syringes — — FDA listed —
Vaqta 326F ANTIGEN (FORMALDEHYDE INACTIVATED) 25 [iU]/.5mLthis 00006-4831-41 Merck 10 vials — — FDA listed —
About this product: this is a biologic. Biologics don't have small-molecule generics — competition comes from FDA-licensed biosimilars (shown above), not generics.
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 & biosimilar status

🏛️
1996
First FDA approval
Mar 1996
📍
2026
Currently FDA-listed
30 years listed
🧬
·
Biosimilars
see Purple Book
🧬Biologic — competition comes from biosimilars

Biologics have no small-molecule generics; biosimilar competition is tracked in the FDA Purple Book.

Where does this data come from?
Patents and exclusivity from the FDA Purple Book (biologics), refreshed from public FDA data. Biosimilar launch timing is an estimate, not a guarantee.

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

Medicare Part D (outpatient prescription) spending for Vaqta — the program that covers self-administered drugs. 1 manufacturer.
⚠️ 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 Vaqta. 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
$312.1K
Claims incl. refills
2.9K
Beneficiaries
2.8K
Spend / beneficiary
$109.67
Spend / claim
$109.06
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.

📦 Packaging — all sizes for this product

Package NDCDescription Marketing startStatus
00006-4831-41 You're viewing this 10 VIAL, SINGLE-DOSE in 1 CARTON (0006-4831-41) / .5 mL in 1 VIAL, SINGLE-DOSE (0006-4831-01) 1996-03-29 Active

🧭 About this NDC listing & data coverage

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

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 FDA registers it as 0006-4831-41, which is what is printed on the packaging and shown on DailyMed. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero: 00006-4831-41, written without dashes as 00006483141. The Identity section at the top of this page lists every form of this code.
What do the three segments of this NDC mean?
In 00006-4831-41, the first segment (00006) is the labeler code FDA assigned to Merck Sharp & Dohme LLC; the middle segment (4831) identifies this specific product — its ingredient, strength, and dosage form; and the last segment (41) identifies this exact package size and type. Together they name one specific package of one specific product.
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 Merck Sharp & Dohme LLC. Listing status can change — the directory data on this page refreshes weekly.
Who lists this product with the FDA?
Merck Sharp & Dohme 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.
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.

📄 Full FDA label FDA SPL

The complete FDA label for this product, 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 ↗
← 00006-4827-00 · Merck 00006-4837-03 · Merck →
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.